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3	3
4	4	**Contents:**
5	5
6		-{{toc/}}
7	7
8	8
9	9
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90	90	* 8500mAh Battery for long term use
91	91
92	92
93		-
94	94	== 1.3  Specification ==
95	95
96	96	=== 1.3.1  Rated environmental conditions ===
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99	99
100	100
101	101	(((
102		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  **
	100	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
103	103
104	104	**~ 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)**
105	105	)))
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138	138	* Bottom water level monitoring
139	139
140	140
141		-
142	142	== 1.6  Pin mapping and power on ==
143	143
144	144
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168	168
169	169	)))
170	170
171		-[[image:1654913911773-521.png]]
	168	+[[image:1654913911773-521.png]]
172	172
173	173
174	174	(((
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236	236
237	237
238	238	(((
239		-(% 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.
	236	+(% style="color:blue" %)**Step 3**(%%)**:** The LDDS45 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.
240	240	)))
241	241
242	242	[[image:1654849068701-275.png]]
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247	247
248	248	(((
249	249	(((
250		-LDDS75 will uplink payload via LoRaWAN with below payload format:
251		-)))
	247	+LDDS45 will uplink payload via LoRaWAN with below payload format:
252	252
253		-(((
254		-Uplink payload includes in total 4 bytes.
255		-Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
	249	+Uplink payload includes in total 8 bytes.
256	256	)))
257	257	)))
258	258
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279	279	=== 2.3.1  Battery Info ===
280	280
281	281
282		-Check the battery voltage for LDDS75.
	276	+Check the battery voltage for LDDS45.
283	283
284	284	Ex1: 0x0B45 = 2885mV
285	285
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290	290	=== 2.3.2  Distance ===
291	291
292	292	(((
293		-Get the distance. Flat object range 280mm - 7500mm.
	287	+Get the distance. Flat object range 30mm - 4500mm.
294	294	)))
295	295
296	296	(((
297		-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.**
	291	+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.**
298	298	)))
299	299
300	300
301	301	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
302		-* 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.
	296	+* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
303	303
304	304
305		-
306	306	=== 2.3.3  Interrupt Pin ===
307	307
308		-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.
	301	+This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.3A0SetInterruptMode"]] for the hardware and software set up.
309	309
310	310	**Example:**
311	311
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325	325
326	326	If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
327	327
328		-(% style="color:red" %)Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.
329	329
330	330
331		-
332	332	=== 2.3.5  Sensor Flag ===
333	333
334	334	(((
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351	351	The payload decoder function for TTN V3 is here:
352	352
353	353	(((
354		-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/]]
	345	+LDDS45 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/]]
355	355	)))
356	356
357	357
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358	358
359	359	== 2.4  Uplink Interval ==
360	360
361		-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"]]
	352	+The LDDS45 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"]]
362	362
363	363
364	364
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389	389
390	390	(% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
391	391
392		-(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS75 and add DevEUI.**
	383	+(% style="color:blue" %)**Step 4**(%%)**: Search the LDDS45 and add DevEUI.**
393	393
394	394	[[image:1654851029373-510.png]]
395	395
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403	403	== 2.6  Frequency Plans ==
404	404
405	405	(((
406		-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.
	397	+The LDDS45 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.
407	407	)))
408	408
409	409
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870	870
871	871	== 2.7  LED Indicator ==
872	872
873		-The LDDS75 has an internal LED which is to show the status of different state.
	864	+The LDDS45 has an internal LED which is to show the status of different state.
874	874
875	875
876	876	* Blink once when device power on.
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879	879	* Blink once when device transmit a packet.
880	880
881	881
882		-
883	883	== 2.8  ​Firmware Change Log ==
884	884
885	885
886	886	(((
887		-**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/]]
	877	+**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Firmware/]]
888	888	)))
889	889
890	890	(((
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1097	1097	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1098	1098
1099	1099
1100		-
1101	1101	= 4.  FAQ =
1102	1102
1103	1103	== 4.1  What is the frequency plan for LDDS75? ==
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1158	1158	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1159	1159
1160	1160
1161		-
1162	1162	= 7. ​ Packing Info =
1163	1163
1164	1164
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1174	1174	* Weight / pcs : g
1175	1175
1176	1176
1177		-
1178	1178	= 8.  ​Support =
1179	1179
1180	1180	* 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.