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Last modified by Mengting Qiu on 2025/08/06 17:02
From version 151.2
edited by Xiaoling
on 2022/06/11 09:30
Change comment: There is no comment for this version
To version 174.9
edited by Xiaoling
on 2022/06/15 10:43
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -LDDS75 - LoRaWAN Distance Detection Sensor User Manual
1 +LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
Content
... ... @@ -1,11 +1,10 @@
1 1  (% style="text-align:center" %)
2 -[[image:1654846127817-788.png]]
2 +[[image:1655254599445-662.png]]
3 3  
4 -**Contents:**
5 5  
6 -{{toc/}}
7 7  
8 8  
7 +**Table of Contents:**
9 9  
10 10  
11 11  
... ... @@ -12,9 +12,11 @@
12 12  
13 13  
14 14  
14 +
15 +
15 15  = 1.  Introduction =
16 16  
17 -== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18 +== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
18 18  
19 19  (((
20 20  
... ... @@ -21,7 +21,8 @@
21 21  
22 22  (((
23 23  (((
24 -The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
25 +(((
26 +The Dragino LDDS20 is a (% style="color:#4472c4" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:#4472c4" %)**none-contact method **(%%)to measure the height of liquid in a container without opening the container, and send the value via LoRaWAN network to IoT Server
25 25  )))
26 26  
27 27  (((
... ... @@ -29,7 +29,7 @@
29 29  )))
30 30  
31 31  (((
32 -It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
34 +The LDDS20 sensor is installed directly below the container to detect the height of the liquid level. User doesn’t need to open a hole on the container to be tested. The (% style="color:#4472c4" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
33 33  )))
34 34  
35 35  (((
... ... @@ -37,7 +37,7 @@
37 37  )))
38 38  
39 39  (((
40 -The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
42 +LDDS20 uses ultrasonic sensing technology for distance measurement. LDDS20 is of high accuracy to measure various liquid such as: (% style="color:#4472c4" %)**toxic substances**(%%), (% style="color:#4472c4" %)**strong acids**(%%), (% style="color:#4472c4" %)**strong alkalis**(%%) and (% style="color:#4472c4" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
41 41  )))
42 42  
43 43  (((
... ... @@ -45,7 +45,7 @@
45 45  )))
46 46  
47 47  (((
48 -LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
50 +The LoRa wireless technology used in LDDS20 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
49 49  )))
50 50  
51 51  (((
... ... @@ -53,7 +53,7 @@
53 53  )))
54 54  
55 55  (((
56 -Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
58 +LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
57 57  )))
58 58  
59 59  (((
... ... @@ -61,13 +61,24 @@
61 61  )))
62 62  
63 63  (((
66 +Each LDDS20 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
67 +)))
68 +
69 +(((
70 +
71 +)))
72 +)))
73 +
74 +(((
75 +(((
64 64  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65 65  )))
66 66  )))
67 67  )))
80 +)))
68 68  
69 69  
70 -[[image:1654847051249-359.png]]
83 +[[image:1655255122126-327.png]]
71 71  
72 72  
73 73  
... ... @@ -75,9 +75,10 @@
75 75  
76 76  * LoRaWAN 1.0.3 Class A
77 77  * Ultra low power consumption
78 -* Distance Detection by Ultrasonic technology
79 -* Flat object range 280mm - 7500mm
80 -* Accuracy: ±(1cm+S*0.3%) (S: Distance)
91 +* Liquid Level Measurement by Ultrasonic technology
92 +* Measure through container, No need to contact Liquid.
93 +* Valid level range 20mm - 2000mm
94 +* Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
81 81  * Cable Length : 25cm
82 82  * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
83 83  * AT Commands to change parameters
... ... @@ -84,72 +84,130 @@
84 84  * Uplink on periodically
85 85  * Downlink to change configure
86 86  * IP66 Waterproof Enclosure
87 -* 4000mAh or 8500mAh Battery for long term use
101 +* 8500mAh Battery for long term use
88 88  
103 +== 1.3  Suitable Container & Liquid ==
89 89  
105 +* Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
106 +* Container shape is regular, and surface is smooth.
107 +* Container Thickness:
108 +** Pure metal material.  2~~8mm, best is 3~~5mm
109 +** Pure non metal material: <10 mm
110 +* Pure liquid without irregular deposition.
90 90  
112 +== 1.4  Mechanical ==
91 91  
114 +[[image:image-20220615090910-1.png]]
92 92  
93 -== 1.3  Specification ==
94 94  
95 -=== 1.3.1  Rated environmental conditions ===
117 +[[image:image-20220615090910-2.png]]
96 96  
97 -[[image:image-20220610154839-1.png]]
98 98  
99 -(((
100 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
101 -)))
102 102  
121 +== 1.5  Install LDDS20 ==
103 103  
104 104  
105 -=== 1.3.2  Effective measurement range Reference beam pattern ===
124 +(% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
106 106  
107 -**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
126 +LDDS20 (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
108 108  
128 +[[image:image-20220615091045-3.png]]
109 109  
110 110  
111 -[[image:1654852253176-749.png]]
112 112  
132 +(% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
113 113  
134 +For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
114 114  
115 -(((
116 -**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
117 -)))
136 +[[image:image-20220615092010-11.png]]
118 118  
119 119  
120 -[[image:1654852175653-550.png]](% style="display:none" %) ** **
139 +No polish needed if the container is shine metal surface without paint or non-metal container.
121 121  
141 +[[image:image-20220615092044-12.png]]
122 122  
123 123  
124 -== 1.5 ​ Applications ==
125 125  
126 -* Horizontal distance measurement
127 -* Liquid level measurement
128 -* Parking management system
129 -* Object proximity and presence detection
130 -* Intelligent trash can management system
131 -* Robot obstacle avoidance
132 -* Automatic control
133 -* Sewer
134 -* Bottom water level monitoring
145 +(% style="color:blue" %)**Step3:   **(%%)Test the installation point.
135 135  
136 -== 1.6  Pin mapping and power on ==
147 +Power on LDDS75, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
137 137  
138 138  
139 -[[image:1654847583902-256.png]]
150 +It is necessary to put the coupling paste between the sensor and the container, otherwise LDDS20 won’t detect the liquid level.
140 140  
152 +[[image:1655256160324-178.png]][[image:image-20220615092327-13.png]]
141 141  
142 142  
143 -= 2.  Configure LDDS75 to connect to LoRaWAN network =
155 +After paste the LDDS20 well, power on LDDS20. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
144 144  
157 +
158 +(% style="color:red" %)**LED Status:**
159 +
160 +* Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
161 +
162 +* (% style="color:blue" %)BLUE LED(% style="color:red" %) always ON(%%): Sensor is power on but doesn’t detect liquid. There is problem in installation point.
163 +* (% style="color:blue" %)BLUE LED(% style="color:red" %) slowly blinking(%%): Sensor detects Liquid Level, The installation point is good.
164 +
165 +LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
166 +
167 +
168 +(% style="color:red" %)**Note 2:**
169 +
170 +(% style="color:red" %)Ultrasonic coupling paste (%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
171 +
172 +
173 +
174 +(% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
175 +
176 +Prepare Eproxy AB glue.
177 +
178 +Put Eproxy AB glue in the sensor and press it hard on the container installation point.
179 +
180 +Reset LDDS20 and see if the BLUE LED is slowly blinking.
181 +
182 +[[image:image-20220615091045-8.png||height="226" width="380"]] [[image:image-20220615091045-9.png||height="239" width="339"]]
183 +
184 +
185 +(% style="color:red" %)**Note 1:**
186 +
187 +Eproxy AB glue needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
188 +
189 +
190 +(% style="color:red" %)**Note 2:**
191 +
192 +(% style="color:red" %)Eproxy AB glue(%%) is subjected in most shipping way. So the default package doesn’t include it and user needs to purchase locally.
193 +
194 +
195 +
196 +== 1.6 ​ Applications ==
197 +
198 +* Smart liquid control solution.
199 +* Smart liquefied gas solution.
200 +
201 +== 1.7  Precautions ==
202 +
203 +* At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
204 +* For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
205 +* When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
206 +
207 +== 1.8  Pin mapping and power on ==
208 +
209 +
210 +[[image:1655257026882-201.png]]
211 +
212 +
213 +
214 += 2.  Configure LDDS20 to connect to LoRaWAN network =
215 +
216 +
145 145  == 2.1  How it works ==
146 146  
147 147  (((
148 -The LDDS75 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS75. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value
220 +The LDDS20 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power on the LDDS20. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and start to send the sensor value.
149 149  )))
150 150  
151 151  (((
152 -In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0ConfigureLDDS75viaATCommandorLoRaWANDownlink"]]to set the keys in the LDDS75.
224 +In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server, you can [[use AT Commands >>||anchor="H3.A0UsingtheATCommands"]]to set the keys in the LDDS20.
153 153  )))
154 154  
155 155  
... ... @@ -161,7 +161,7 @@
161 161  )))
162 162  
163 163  (((
164 -[[image:1654848616367-242.png]]
236 +[[image:1655257698953-697.png]]
165 165  )))
166 166  
167 167  (((
... ... @@ -169,11 +169,13 @@
169 169  )))
170 170  
171 171  (((
172 -(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
244 +
245 +
246 +(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS20.
173 173  )))
174 174  
175 175  (((
176 -Each LDDS75 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
250 +Each LDDS20 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
177 177  )))
178 178  
179 179  [[image:image-20220607170145-1.jpeg]]
... ... @@ -188,6 +188,8 @@
188 188  )))
189 189  
190 190  (((
265 +
266 +
191 191  **Add APP EUI in the application**
192 192  )))
193 193  
... ... @@ -201,6 +201,7 @@
201 201  [[image:image-20220610161353-7.png]]
202 202  
203 203  
280 +
204 204  You can also choose to create the device manually.
205 205  
206 206   [[image:image-20220610161538-8.png]]
... ... @@ -213,16 +213,17 @@
213 213  
214 214  
215 215  
216 -(% style="color:blue" %)**Step 2**(%%): Power on LDDS75
293 +(% style="color:blue" %)**Step 2**(%%):  Power on LDDS20
217 217  
218 218  
219 219  Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
220 220  
221 -[[image:image-20220610161724-10.png]]
298 +[[image:image-20220615095102-14.png]]
222 222  
223 223  
301 +
224 224  (((
225 -(% style="color:blue" %)**Step 3**(%%)**:** The LDDS75 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
303 +(% style="color:blue" %)**Step 3**(%%)**:**  The LDDS20 will auto join to the TTN network. After join success, it will start to upload messages to TTN and you can see the messages in the panel.
226 226  )))
227 227  
228 228  [[image:1654849068701-275.png]]
... ... @@ -233,12 +233,10 @@
233 233  
234 234  (((
235 235  (((
236 -LDDS75 will uplink payload via LoRaWAN with below payload format: 
237 -)))
314 +LDDS20 will uplink payload via LoRaWAN with below payload format: 
238 238  
239 -(((
240 -Uplink payload includes in total 4 bytes.
241 -Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
316 +Uplink payload includes in total 8 bytes.
317 +Payload for firmware version v1.1.4. . Before v1.1.3, there is only 5 bytes: BAT and Distance(Please check manual v1.2.0 if you have 5 bytes payload).
242 242  )))
243 243  )))
244 244  
... ... @@ -265,7 +265,7 @@
265 265  === 2.3.1  Battery Info ===
266 266  
267 267  
268 -Check the battery voltage for LDDS75.
344 +Check the battery voltage for LDDS20.
269 269  
270 270  Ex1: 0x0B45 = 2885mV
271 271  
... ... @@ -276,20 +276,21 @@
276 276  === 2.3.2  Distance ===
277 277  
278 278  (((
279 -Get the distance. Flat object range 280mm - 7500mm.
355 +Get the distance. Flat object range 20mm - 2000mm.
280 280  )))
281 281  
282 282  (((
283 -For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
359 +For example, if the data you get from the register is __0x06 0x05__, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0605(H) = 1541 (D) = 1541 mm.**
284 284  )))
285 285  
362 +* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
363 +* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
286 286  
287 -* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
288 -* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
289 289  
366 +
290 290  === 2.3.3  Interrupt Pin ===
291 291  
292 -This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
369 +This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.2A0SetInterruptMode"]] for the hardware and software set up.
293 293  
294 294  **Example:**
295 295  
... ... @@ -335,699 +335,300 @@
335 335  The payload decoder function for TTN V3 is here:
336 336  
337 337  (((
338 -LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
415 +LDDS20 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS20/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
339 339  )))
340 340  
341 341  
342 342  
343 -== 2.4  Uplink Interval ==
420 +== 2.4  Downlink Payload ==
344 344  
345 -The LDDS75 by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
422 +By default, LDDS20 prints the downlink payload to console port.
346 346  
424 +[[image:image-20220615100930-15.png]]
347 347  
348 348  
349 -== 2.5  ​Show Data in DataCake IoT Server ==
427 +**Examples:**
350 350  
351 -(((
352 -[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
353 -)))
354 354  
355 -(((
356 -
357 -)))
430 +* (% style="color:blue" %)**Set TDC**
358 358  
359 -(((
360 -(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
361 -)))
432 +If the payload=0100003C, it means set the END Node's TDC to 0x00003C=60(S), while type code is 01.
362 362  
363 -(((
364 -(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
365 -)))
434 +Payload:    01 00 00 1E    TDC=30S
366 366  
436 +Payload:    01 00 00 3C    TDC=60S
367 367  
368 -[[image:1654592790040-760.png]]
369 369  
439 +* (% style="color:blue" %)**Reset**
370 370  
371 -[[image:1654592800389-571.png]]
441 +If payload = 0x04FF, it will reset the LDDS20
372 372  
373 373  
374 -(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
444 +* (% style="color:blue" %)**CFM**
375 375  
376 -(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
446 +Downlink Payload: 05000001, Set AT+CFM=1 or 05000000 , set AT+CFM=0
377 377  
378 -[[image:1654851029373-510.png]]
379 379  
380 380  
381 -After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
450 +== 2.5  ​Show Data in DataCake IoT Server ==
382 382  
383 -[[image:image-20220610165129-11.png||height="595" width="1088"]]
384 -
385 -
386 -
387 -== 2.6  Frequency Plans ==
388 -
389 389  (((
390 -The LDDS75 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
453 +[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
391 391  )))
392 392  
393 -
394 -
395 -=== 2.6.1  EU863-870 (EU868) ===
396 -
397 397  (((
398 -(% style="color:blue" %)**Uplink:**
399 -)))
400 -
401 -(((
402 -868.1 - SF7BW125 to SF12BW125
403 -)))
404 -
405 -(((
406 -868.3 - SF7BW125 to SF12BW125 and SF7BW250
407 -)))
408 -
409 -(((
410 -868.5 - SF7BW125 to SF12BW125
411 -)))
412 -
413 -(((
414 -867.1 - SF7BW125 to SF12BW125
415 -)))
416 -
417 -(((
418 -867.3 - SF7BW125 to SF12BW125
419 -)))
420 -
421 -(((
422 -867.5 - SF7BW125 to SF12BW125
423 -)))
424 -
425 -(((
426 -867.7 - SF7BW125 to SF12BW125
427 -)))
428 -
429 -(((
430 -867.9 - SF7BW125 to SF12BW125
431 -)))
432 -
433 -(((
434 -868.8 - FSK
435 -)))
436 -
437 -(((
438 438  
439 439  )))
440 440  
441 441  (((
442 -(% style="color:blue" %)**Downlink:**
461 +(% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
443 443  )))
444 444  
445 445  (((
446 -Uplink channels 1-9 (RX1)
465 +(% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
447 447  )))
448 448  
449 -(((
450 -869.525 - SF9BW125 (RX2 downlink only)
451 -)))
452 452  
469 +[[image:1654592790040-760.png]]
453 453  
454 454  
455 -=== 2.6.2  US902-928(US915) ===
472 +[[image:1654592800389-571.png]]
456 456  
457 -(((
458 -Used in USA, Canada and South America. Default use CHE=2
459 459  
460 -(% style="color:blue" %)**Uplink:**
475 +(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
461 461  
462 -903.9 - SF7BW125 to SF10BW125
477 +(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.(% style="color:red" %)(Note: LDDS20 use same payload as LDDS75)(%%)**
463 463  
464 -904.1 - SF7BW125 to SF10BW125
479 +[[image:1654851029373-510.png]]
465 465  
466 -904.3 - SF7BW125 to SF10BW125
467 467  
468 -904.5 - SF7BW125 to SF10BW125
482 +After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
469 469  
470 -904.7 - SF7BW125 to SF10BW125
484 +[[image:image-20220610165129-11.png||height="595" width="1088"]]
471 471  
472 -904.9 - SF7BW125 to SF10BW125
473 473  
474 -905.1 - SF7BW125 to SF10BW125
475 475  
476 -905.3 - SF7BW125 to SF10BW125
488 +== 2.6  LED Indicator ==
477 477  
490 +The LDDS20 has an internal LED which is to show the status of different state.
478 478  
479 -(% style="color:blue" %)**Downlink:**
480 480  
481 -923.3 - SF7BW500 to SF12BW500
493 +* Blink once when device power on.
494 +* The device detects the sensor and flashes 5 times.
495 +* Solid ON for 5 seconds once device successful Join the network.
496 +* Blink once when device transmit a packet.
482 482  
483 -923.9 - SF7BW500 to SF12BW500
484 484  
485 -924.5 - SF7BW500 to SF12BW500
486 486  
487 -925.1 - SF7BW500 to SF12BW500
500 +== 2.7  ​Firmware Change Log ==
488 488  
489 -925.7 - SF7BW500 to SF12BW500
490 490  
491 -926.3 - SF7BW500 to SF12BW500
492 -
493 -926.9 - SF7BW500 to SF12BW500
494 -
495 -927.5 - SF7BW500 to SF12BW500
496 -
497 -923.3 - SF12BW500(RX2 downlink only)
498 -
499 -
500 -
501 -)))
502 -
503 -=== 2.6.3  CN470-510 (CN470) ===
504 -
505 505  (((
506 -Used in China, Default use CHE=1
504 +**Firmware download link:  **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
507 507  )))
508 508  
509 509  (((
510 -(% style="color:blue" %)**Uplink:**
511 -)))
512 -
513 -(((
514 -486.3 - SF7BW125 to SF12BW125
515 -)))
516 -
517 -(((
518 -486.5 - SF7BW125 to SF12BW125
519 -)))
520 -
521 -(((
522 -486.7 - SF7BW125 to SF12BW125
523 -)))
524 -
525 -(((
526 -486.9 - SF7BW125 to SF12BW125
527 -)))
528 -
529 -(((
530 -487.1 - SF7BW125 to SF12BW125
531 -)))
532 -
533 -(((
534 -487.3 - SF7BW125 to SF12BW125
535 -)))
536 -
537 -(((
538 -487.5 - SF7BW125 to SF12BW125
539 -)))
540 -
541 -(((
542 -487.7 - SF7BW125 to SF12BW125
543 -)))
544 -
545 -(((
546 546  
547 547  )))
548 548  
549 549  (((
550 -(% style="color:blue" %)**Downlink:**
512 +**Firmware Upgrade Method:  [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]**
551 551  )))
552 552  
553 -(((
554 -506.7 - SF7BW125 to SF12BW125
555 -)))
556 556  
557 -(((
558 -506.9 - SF7BW125 to SF12BW125
559 -)))
560 560  
561 -(((
562 -507.1 - SF7BW125 to SF12BW125
563 -)))
517 +== 2.8  Battery Analysis ==
564 564  
565 -(((
566 -507.3 - SF7BW125 to SF12BW125
567 -)))
568 568  
569 -(((
570 -507.5 - SF7BW125 to SF12BW125
571 -)))
572 572  
573 -(((
574 -507.7 - SF7BW125 to SF12BW125
575 -)))
576 576  
577 -(((
578 -507.9 - SF7BW125 to SF12BW125
579 -)))
522 +=== 2.8.1  Battery Type ===
580 580  
581 -(((
582 -508.1 - SF7BW125 to SF12BW125
583 -)))
524 +The LDDS20 battery is a combination of a 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
584 584  
585 -(((
586 -505.3 - SF12BW125 (RX2 downlink only)
587 -)))
588 588  
527 +The battery related documents as below:
589 589  
590 -
591 -=== 2.6.4  AU915-928(AU915) ===
592 -
593 -(((
594 -Default use CHE=2
595 -
596 -(% style="color:blue" %)**Uplink:**
597 -
598 -916.8 - SF7BW125 to SF12BW125
599 -
600 -917.0 - SF7BW125 to SF12BW125
601 -
602 -917.2 - SF7BW125 to SF12BW125
603 -
604 -917.4 - SF7BW125 to SF12BW125
605 -
606 -917.6 - SF7BW125 to SF12BW125
607 -
608 -917.8 - SF7BW125 to SF12BW125
609 -
610 -918.0 - SF7BW125 to SF12BW125
611 -
612 -918.2 - SF7BW125 to SF12BW125
613 -
614 -
615 -(% style="color:blue" %)**Downlink:**
616 -
617 -923.3 - SF7BW500 to SF12BW500
618 -
619 -923.9 - SF7BW500 to SF12BW500
620 -
621 -924.5 - SF7BW500 to SF12BW500
622 -
623 -925.1 - SF7BW500 to SF12BW500
624 -
625 -925.7 - SF7BW500 to SF12BW500
626 -
627 -926.3 - SF7BW500 to SF12BW500
628 -
629 -926.9 - SF7BW500 to SF12BW500
630 -
631 -927.5 - SF7BW500 to SF12BW500
632 -
633 -923.3 - SF12BW500(RX2 downlink only)
634 -
635 -
636 -
529 +* (((
530 +[[Battery Dimension>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
637 637  )))
638 -
639 -=== 2.6.5  AS920-923 & AS923-925 (AS923) ===
640 -
641 -(((
642 -(% style="color:blue" %)**Default Uplink channel:**
532 +* (((
533 +[[Lithium-Thionyl Chloride Battery  datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]],
643 643  )))
644 -
645 -(((
646 -923.2 - SF7BW125 to SF10BW125
535 +* (((
536 +[[Lithium-ion Battery-Capacitor datasheet>>https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]
647 647  )))
648 648  
649 -(((
650 -923.4 - SF7BW125 to SF10BW125
651 -)))
539 + [[image:image-20220615102527-16.png]]
652 652  
653 -(((
654 -
655 -)))
656 656  
657 -(((
658 -(% style="color:blue" %)**Additional Uplink Channel**:
659 -)))
660 660  
661 -(((
662 -(OTAA mode, channel added by JoinAccept message)
663 -)))
543 +== 2.8.2  Battery Note ==
664 664  
665 -(((
666 -
667 -)))
545 +The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to uplink data, then the battery life may be decreased.
668 668  
669 -(((
670 -(% style="color:blue" %)**AS920~~AS923 for Japan, Malaysia, Singapore**:
671 -)))
672 672  
673 -(((
674 -922.2 - SF7BW125 to SF10BW125
675 -)))
676 676  
677 -(((
678 -922.4 - SF7BW125 to SF10BW125
679 -)))
549 +=== 2.8.3  Replace the battery ===
680 680  
681 681  (((
682 -922.6 - SF7BW125 to SF10BW125
552 +You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
683 683  )))
684 684  
685 685  (((
686 -922.8 - SF7BW125 to SF10BW125
687 -)))
688 -
689 -(((
690 -923.0 - SF7BW125 to SF10BW125
691 -)))
692 -
693 -(((
694 -922.0 - SF7BW125 to SF10BW125
695 -)))
696 -
697 -(((
698 698  
699 699  )))
700 700  
701 701  (((
702 -(% style="color:blue" %)**AS923 ~~ AS925 for Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam**:
560 +The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
703 703  )))
704 704  
705 -(((
706 -923.6 - SF7BW125 to SF10BW125
707 -)))
708 708  
709 -(((
710 -923.8 - SF7BW125 to SF10BW125
711 -)))
712 712  
713 -(((
714 -924.0 - SF7BW125 to SF10BW125
715 -)))
565 +== 2.8.4  Battery Life Analyze ==
716 716  
717 -(((
718 -924.2 - SF7BW125 to SF10BW125
719 -)))
567 +Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
720 720  
721 -(((
722 -924.4 - SF7BW125 to SF10BW125
723 -)))
569 +[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
724 724  
725 -(((
726 -924.6 - SF7BW125 to SF10BW125
727 -)))
728 728  
729 -(((
730 -
731 -)))
732 732  
733 -(((
734 -(% style="color:blue" %)**Downlink:**
735 -)))
573 += 3.  Using the AT Commands =
736 736  
737 737  (((
738 -Uplink channels 1-8 (RX1)
739 -)))
740 -
741 741  (((
742 -923.2 - SF10BW125 (RX2)
743 -)))
744 -
745 -
746 -
747 -=== 2.6.6  KR920-923 (KR920) ===
748 -
749 -(((
750 -(% style="color:blue" %)**Default channel:**
751 -)))
752 -
753 -(((
754 -922.1 - SF7BW125 to SF12BW125
755 -)))
756 -
757 -(((
758 -922.3 - SF7BW125 to SF12BW125
759 -)))
760 -
761 -(((
762 -922.5 - SF7BW125 to SF12BW125
763 -)))
764 -
765 -(((
766 766  
767 767  )))
768 -
769 -(((
770 -(% style="color:blue" %)**Uplink: (OTAA mode, channel added by JoinAccept message)**
771 771  )))
772 772  
773 -(((
774 -922.1 - SF7BW125 to SF12BW125
775 -)))
581 +== 3.1  Access AT Commands ==
776 776  
777 -(((
778 -922.3 - SF7BW125 to SF12BW125
779 -)))
583 +LDDS20 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS20 for using AT command, as below.
780 780  
781 -(((
782 -922.5 - SF7BW125 to SF12BW125
783 -)))
784 784  
785 -(((
786 -922.7 - SF7BW125 to SF12BW125
787 -)))
586 +[[image:image-20220610172924-4.png||height="483" width="988"]]
788 788  
789 -(((
790 -922.9 - SF7BW125 to SF12BW125
791 -)))
792 792  
793 -(((
794 -923.1 - SF7BW125 to SF12BW125
795 -)))
589 +Or if you have below board, use below connection:
796 796  
797 -(((
798 -923.3 - SF7BW125 to SF12BW125
799 -)))
800 800  
801 -(((
802 -
803 -)))
592 +[[image:image-20220610172924-5.png]]
804 804  
805 -(((
806 -(% style="color:blue" %)**Downlink:**
807 -)))
808 808  
809 809  (((
810 -Uplink channels 1-7(RX1)
596 +In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS20. LDDS20 will output system info once power on as below:
811 811  )))
812 812  
813 -(((
814 -921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
815 -)))
816 816  
600 + [[image:image-20220610172924-6.png||height="601" width="860"]]
817 817  
602 +Below are the available commands, a more detailed AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/]].
818 818  
819 -=== 2.6.7  IN865-867 (IN865) ===
820 820  
821 -(((
822 -(% style="color:blue" %)**Uplink:**
823 -)))
605 +AT+<CMD>?  :  Help on <CMD>
824 824  
825 -(((
826 -865.0625 - SF7BW125 to SF12BW125
827 -)))
607 +AT+<CMD>  :  Run <CMD>
828 828  
829 -(((
830 -865.4025 - SF7BW125 to SF12BW125
831 -)))
609 +AT+<CMD>=<value>  :  Set the value
832 832  
833 -(((
834 -865.9850 - SF7BW125 to SF12BW125
835 -)))
611 +AT+<CMD>=?  :  Get the value
836 836  
837 -(((
838 -
839 -)))
840 840  
841 -(((
842 -(% style="color:blue" %)**Downlink:**
843 -)))
614 +**General Commands**      
844 844  
845 -(((
846 -Uplink channels 1-3 (RX1)
847 -)))
616 +AT                    : Attention       
848 848  
849 -(((
850 -866.550 - SF10BW125 (RX2)
851 -)))
618 +AT?                            : Short Help     
852 852  
620 +ATZ                            : MCU Reset    
853 853  
622 +AT+TDC           : Application Data Transmission Interval 
854 854  
855 -== 2.7  LED Indicator ==
856 856  
857 -The LDDS75 has an internal LED which is to show the status of different state.
625 +**Keys, IDs and EUIs management**
858 858  
627 +AT+APPEUI              : Application EUI      
859 859  
860 -* Blink once when device power on.
861 -* The device detects the sensor and flashes 5 times.
862 -* Solid ON for 5 seconds once device successful Join the network.
863 -* Blink once when device transmit a packet.
629 +AT+APPKEY              : Application Key     
864 864  
865 -== 2.8  ​Firmware Change Log ==
631 +AT+APPSKEY            : Application Session Key
866 866  
633 +AT+DADDR              : Device Address     
867 867  
868 -(((
869 -**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
870 -)))
635 +AT+DEUI                   : Device EUI     
871 871  
872 -(((
873 -
874 -)))
637 +AT+NWKID               : Network ID (You can enter this command change only after successful network connection) 
875 875  
876 -(((
877 -**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
878 -)))
639 +AT+NWKSKEY          : Network Session Key Joining and sending date on LoRa network  
879 879  
641 +AT+CFM          : Confirm Mode       
880 880  
643 +AT+CFS                     : Confirm Status       
881 881  
882 -== 2.9  Mechanical ==
645 +AT+JOIN          : Join LoRa? Network       
883 883  
647 +AT+NJM          : LoRa? Network Join Mode    
884 884  
885 -[[image:image-20220610172003-1.png]]
649 +AT+NJS                     : LoRa? Network Join Status    
886 886  
651 +AT+RECV                  : Print Last Received Data in Raw Format
887 887  
888 -[[image:image-20220610172003-2.png]]
653 +AT+RECVB                : Print Last Received Data in Binary Format      
889 889  
655 +AT+SEND                  : Send Text Data      
890 890  
657 +AT+SENB                  : Send Hexadecimal Data
891 891  
892 -== 2.10  Battery Analysis ==
893 893  
894 -=== 2.10.1  Battery Type ===
660 +**LoRa Network Management**
895 895  
896 -The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
662 +AT+ADR          : Adaptive Rate
897 897  
664 +AT+CLASS                : LoRa Class(Currently only support class A
898 898  
899 -The battery related documents as below:
666 +AT+DCS           : Duty Cycle Setting 
900 900  
901 -* (((
902 -[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
903 -)))
904 -* (((
905 -[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
906 -)))
907 -* (((
908 -[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
909 -)))
668 +AT+DR                      : Data Rate (Can Only be Modified after ADR=0)     
910 910  
911 - [[image:image-20220610172400-3.png]]
670 +AT+FCD           : Frame Counter Downlink       
912 912  
672 +AT+FCU           : Frame Counter Uplink   
913 913  
674 +AT+JN1DL                : Join Accept Delay1
914 914  
915 -=== 2.10.2  Replace the battery ===
676 +AT+JN2DL                : Join Accept Delay2
916 916  
917 -(((
918 -You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
919 -)))
678 +AT+PNM                   : Public Network Mode   
920 920  
921 -(((
922 -
923 -)))
680 +AT+RX1DL                : Receive Delay1      
924 924  
925 -(((
926 -The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
927 -)))
682 +AT+RX2DL                : Receive Delay2      
928 928  
684 +AT+RX2DR               : Rx2 Window Data Rate 
929 929  
686 +AT+RX2FQ               : Rx2 Window Frequency
930 930  
931 -= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
688 +AT+TXP           : Transmit Power
932 932  
933 -(((
934 -(((
935 -Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
936 -)))
937 -)))
938 938  
939 -* (((
940 -(((
941 -AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
942 -)))
943 -)))
944 -* (((
945 -(((
946 -LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
947 -)))
948 -)))
691 +**Information** 
949 949  
950 -(((
951 -(((
952 -
953 -)))
693 +AT+RSSI           : RSSI of the Last Received Packet   
954 954  
955 -(((
956 -There are two kinds of commands to configure LDDS75, they are:
957 -)))
958 -)))
695 +AT+SNR           : SNR of the Last Received Packet   
959 959  
960 -* (((
961 -(((
962 -(% style="color:#4f81bd" %)** General Commands**.
963 -)))
964 -)))
697 +AT+VER           : Image Version and Frequency Band       
965 965  
966 -(((
967 -(((
968 -These commands are to configure:
969 -)))
970 -)))
699 +AT+FDR           : Factory Data Reset
971 971  
972 -* (((
973 -(((
974 -General system settings like: uplink interval.
975 -)))
976 -)))
977 -* (((
978 -(((
979 -LoRaWAN protocol & radio related command.
980 -)))
981 -)))
701 +AT+PORT                  : Application Port    
982 982  
983 -(((
984 -(((
985 -They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
986 -)))
987 -)))
703 +AT+CHS           : Get or Set Frequency (Unit: Hz) for Single Channel Mode
988 988  
989 -(((
990 -(((
991 -
992 -)))
993 -)))
705 + AT+CHE                   : Get or Set eight channels mode, Only for US915, AU915, CN470
994 994  
995 -* (((
996 -(((
997 -(% style="color:#4f81bd" %)** Commands special design for LDDS75**
998 -)))
999 -)))
1000 1000  
1001 -(((
1002 -(((
1003 -These commands only valid for LDDS75, as below:
1004 -)))
1005 -)))
1006 1006  
1007 -
1008 -
1009 -== 3.1  Access AT Commands ==
1010 -
1011 -LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
1012 -
1013 -[[image:image-20220610172924-4.png||height="483" width="988"]]
1014 -
1015 -
1016 -Or if you have below board, use below connection:
1017 -
1018 -
1019 -[[image:image-20220610172924-5.png]]
1020 -
1021 -
1022 -(((
1023 -In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1024 -)))
1025 -
1026 -
1027 - [[image:image-20220610172924-6.png||height="601" width="860"]]
1028 -
1029 -
1030 -
1031 1031  == 3.2  Set Transmit Interval Time ==
1032 1032  
1033 1033  Feature: Change LoRaWAN End Node Transmit Interval.
... ... @@ -1052,11 +1052,12 @@
1052 1052  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1053 1053  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1054 1054  )))
733 +)))
1055 1055  
1056 1056  
1057 -
1058 -)))
1059 1059  
737 +
738 +
1060 1060  == 3.3  Set Interrupt Mode ==
1061 1061  
1062 1062  Feature, Set Interrupt mode for GPIO_EXIT.
... ... @@ -1077,7 +1077,6 @@
1077 1077  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1078 1078  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1079 1079  
1080 -
1081 1081  = 4.  FAQ =
1082 1082  
1083 1083  == 4.1  What is the frequency plan for LDDS75? ==
... ... @@ -1137,7 +1137,6 @@
1137 1137  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1138 1138  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1139 1139  
1140 -
1141 1141  = 7. ​ Packing Info =
1142 1142  
1143 1143  
... ... @@ -1152,7 +1152,6 @@
1152 1152  * Package Size / pcs : cm
1153 1153  * Weight / pcs : g
1154 1154  
1155 -
1156 1156  = 8.  ​Support =
1157 1157  
1158 1158  * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
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