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Author

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1		-XWiki.Edwin
	1	+XWiki.Xiaoling

Content

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1		-{{box cssClass="floatinginfobox" title="**Contents**"}}
	1	+(% style="text-align:center" %)
	2	+[[image:image-20220523115324-1.jpeg||height="500" width="500"]]
	3	+
	4	+
	5	+**LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
	6	+
	7	+
	8	+
	9	+**Table of Contents：**
	10	+
2	2	{{toc/}}
3		-{{/box}}
4	4
5		-= Overview =
6	6
7		-[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
8	8
	15	+= 1.Introduction =
9	9
10		-The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.**
	17	+== 1.1 What is LHT65N Temperature & Humidity Sensor ==
11	11
	19	+(((
	20	+The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor**(%%)**.**
	21	+)))
	22	+
	23	+(((
12	12	The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
	25	+)))
13	13
	27	+(((
14	14	LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
	29	+)))
15	15
	31	+(((
16	16	LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
	33	+)))
17	17
18		-LHT65N supports (% class="mark" %)Datalog Feature(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
	35	+(((
	36	+LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
	37	+)))
19	19
	39	+(((
20	20	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
	41	+)))
21	21
	43	+== 1.2 Features ==
22	22
23		-== Features: ==
24		-
25	25	* Wall mountable
26	26	* LoRaWAN v1.0.3 Class A protocol
27	27	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
...	...	@@ -34,55 +34,91 @@
34	34	* Tri-color LED to indicate working status
35	35	* Datalog feature
36	36
37		-== Specification: ==
	57	+== 1.3 Specification ==
38	38
	59	+(((
39	39	**Built-in Temperature Sensor:**
	61	+)))
40	40
41		-* Resolution: 0.01 °C
42		-* Accuracy Tolerance : Typ ±0.3 °C
43		-* Long Term Drift: < 0.02 °C/yr
44		-* Operating Range: -40 ~~ 85 °C
	63	+* (((
	64	+Resolution: 0.01 °C
	65	+)))
	66	+* (((
	67	+Accuracy Tolerance : Typ ±0.3 °C
	68	+)))
	69	+* (((
	70	+Long Term Drift: < 0.02 °C/yr
	71	+)))
	72	+* (((
	73	+Operating Range: -40 ~~ 85 °C
	74	+)))
45	45
	76	+(((
46	46	**Built-in Humidity Sensor:**
	78	+)))
47	47
48		-* Resolution: 0.04 %RH
49		-* Accuracy Tolerance : Typ ±3 %RH
50		-* Long Term Drift: < 0.02 °C/yr
51		-* Operating Range: 0 ~~ 96 %RH
	80	+* (((
	81	+Resolution: 0.04 %RH
	82	+)))
	83	+* (((
	84	+Accuracy Tolerance : Typ ±3 %RH
	85	+)))
	86	+* (((
	87	+Long Term Drift: < 0.02 °C/yr
	88	+)))
	89	+* (((
	90	+Operating Range: 0 ~~ 96 %RH
	91	+)))
52	52
	93	+(((
53	53	**External Temperature Sensor:**
	95	+)))
54	54
55		-* Resolution: 0.0625 °C
56		-* ±0.5°C accuracy from -10°C to +85°C
57		-* ±2°C accuracy from -55°C to +125°C
58		-* Operating Range: -55 °C ~~ 125 °C
	97	+* (((
	98	+Resolution: 0.0625 °C
	99	+)))
	100	+* (((
	101	+±0.5°C accuracy from -10°C to +85°C
	102	+)))
	103	+* (((
	104	+±2°C accuracy from -55°C to +125°C
	105	+)))
	106	+* (((
	107	+Operating Range: -55 °C ~~ 125 °C
	108	+)))
59	59
60		-= Connect LHT65N to IoT Server =
	110	+= 2. Connect LHT65N to IoT Server =
61	61
62		-== How does LHT65N work? ==
	112	+== 2.1 How does LHT65N work? ==
63	63
	114	+(((
64	64	LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
	116	+)))
65	65
	118	+(((
66	66	If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
	120	+)))
67	67
	122	+== 2.2 How to Activate LHT65N? ==
68	68
69		-== How to Activate LHT65N? ==
70		-
71	71	The LHT65N has two working modes:
72	72
73	73	* **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
74	74	* **Working Mode**: In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.
75	75
	129	+(((
76	76	The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
	131	+)))
77	77
78	78	[[image:image-20220515123819-1.png||height="379" width="317"]]
79	79
80		-|**Behavior on ACT**|**Function**|**Action**
81		-|**Pressing ACT between 1s < time < 3s**|Test uplink status|If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
82		-|**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
83		-|**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
	135	+(% border="1" style="background-color:#ffffcc; color:green; width:739px" %)
	136	+|**Behavior on ACT**|**Function**|(% style="width:424px" %)**Action**
	137	+|**Pressing ACT between 1s < time < 3s**|Test uplink status|(% style="width:424px" %)If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
	138	+|**Pressing ACT for more than 3s**|Active Device|(% style="width:424px" %)green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
	139	+|**Fast press ACT 5 times**|Deactivate Device|(% style="width:424px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84	84
85		-== Example to join LoRaWAN network ==
	141	+== 2.3 Example to join LoRaWAN network ==
86	86
87	87	(% class="wikigeneratedid" %)
88	88	This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
...	...	@@ -93,7 +93,7 @@
93	93	Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
94	94
95	95
96		-=== **Step 1**: Create Device n TTN ===
	152	+=== 2.3.1 Step 1: Create Device n TTN ===
97	97
98	98	Create a device in TTN V3 with the OTAA keys from LHT65N.
99	99
...	...	@@ -107,10 +107,8 @@
107	107
108	108	[[image:image-20220522232916-3.png]]
109	109
110		-
111	111	[[image:image-20220522232932-4.png]]
112	112
113		-
114	114	[[image:image-20220522232954-5.png]]
115	115
116	116	Note: LHT65N use same payload as LHT65.
...	...	@@ -123,37 +123,65 @@
123	123	[[image:image-20220522233118-7.png]]
124	124
125	125
126		-=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
	180	+=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127	127
128	128	Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
129	129
130		-[[image:image-20220522233300-8.png]]
	184	+[[image:image-20220522233300-8.png||height="219" width="722"]]
131	131
132	132
133		-== Uplink Payload: ==
	187	+== 2.4 Uplink Payload ==
134	134
135		-The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
	189	+The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
136	136
137		-After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
	191	+After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
138	138
139	139
140		-(% style="width:572px" %)
141		-|(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
142		-|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143		-[[Built-In>>path:#SHT20_Temperature]]
	194	+(% border="1" style="background-color:#ffffcc; color:green; width:428px" %)
	195	+|(% style="width:106px" %)(((
	196	+**Size(bytes)**
	197	+)))|(% style="width:46px" %)(((
	198	+**2**
	199	+)))|(% style="width:104px" %)(((
	200	+**2**
	201	+)))|(% style="width:80px" %)(((
	202	+**2**
	203	+)))|(% style="width:51px" %)(((
	204	+**1**
	205	+)))|(% style="width:35px" %)(((
	206	+**4**
	207	+)))
	208	+|(% style="width:106px" %)(((
	209	+**Value**
	210	+)))|(% style="width:46px" %)(((
	211	+[[BAT>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]
	212	+)))|(% style="width:104px" %)(((
	213	+(((
	214	+[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
	215	+)))
144	144
145		-[[Temperature>>path:#SHT20_Temperature]]
146		-)))|(% style="width:103px" %)(((
147		-[[Built-in>>path:#SHT20_Humidity]]
	217	+(((
	218	+[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
	219	+)))
	220	+)))|(% style="width:80px" %)(((
	221	+(((
	222	+[[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	223	+)))
148	148
149		-[[Humidity>>path:#SHT20_Humidity]]
150		-)))|(% style="width:72px" %)[[Ext>>path:#Extension_Sensor]] #|(% style="width:89px" %)[[Ext value>>path:#Extension_sensor_value]]
	225	+(((
	226	+[[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	227	+)))
	228	+)))|(% style="width:51px" %)(((
	229	+[[Ext>>path:#Extension_Sensor]] #
	230	+)))|(% style="width:35px" %)(((
	231	+[[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
	232	+)))
151	151
152	152	* The First 6 bytes: has fix meanings for every LHT65N.
153	153	* The 7th byte (EXT #): defines the external sensor model.
154	154	* The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won’t be these four bytes.)
155	155
156		-=== Decoder in TTN V3 ===
	238	+=== 2.4.1 Decoder in TTN V3 ===
157	157
158	158	When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
159	159
...	...	@@ -161,28 +161,47 @@
161	161
162	162	[[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
163	163
164		-[[image:image-20220522234118-10.png]]
	246	+[[image:image-20220522234118-10.png||height="353" width="729"]]
165	165
	248	+=== 2.4.2 BAT-Battery Info ===
166	166
167		-=== BAT-Battery Info ===
168		-
169	169	These two bytes of BAT include the battery state and the actually voltage
170	170
171		-(% style="width:646px" %)
172		-|Bit(bit)|(% style="width:272px" %)[15:14]|(% style="width:214px" %)[13:0]
173		-|Value|(% style="width:272px" %)(((
	252	+(% border="1" style="background-color:#ffffcc; color:green; width:502px" %)
	253	+|(% style="width:75px" %)(((
	254	+Bit(bit)
	255	+)))|(% style="width:259px" %)(((
	256	+[15:14]
	257	+)))|(% style="width:164px" %)(((
	258	+[13:0]
	259	+)))
	260	+|(% style="width:75px" %)(((
	261	+Value
	262	+)))|(% style="width:259px" %)(((
	263	+(((
174	174	BAT Status
	265	+)))
175	175
	267	+(((
176	176	00(b): Ultra Low ( BAT <= 2.50v)
	269	+)))
177	177
	271	+(((
178	178	01(b): Low  (2.50v <=BAT <= 2.55v)
	273	+)))
179	179
	275	+(((
180	180	10(b): OK   (2.55v <= BAT <=2.65v)
	277	+)))
181	181
	279	+(((
182	182	11(b): Good   (BAT >= 2.65v)
183		-)))|(% style="width:214px" %)Actually BAT voltage
	281	+)))
	282	+)))|(% style="width:164px" %)(((
	283	+Actually BAT voltage
	284	+)))
184	184
185		-[[image:image-20220522235639-1.png]]
	286	+[[image:image-20220522235639-1.png||height="139" width="727"]]
186	186
187	187	Check the battery voltage for LHT65N.
188	188
...	...	@@ -189,9 +189,9 @@
189	189	* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
190	190	* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
191	191
192		-=== Built-in Temperature ===
	293	+=== 2.4.3 Built-in Temperature ===
193	193
194		-[[image:image-20220522235639-2.png]]
	295	+[[image:image-20220522235639-2.png||height="138" width="722"]]
195	195
196	196	* Temperature:  0x0ABB/100=27.47℃
197	197
...	...	@@ -199,70 +199,69 @@
199	199
200	200	* Temperature:  (0xF5C6-65536)/100=-26.18℃
201	201
202		-=== Built-in Humidity ===
	303	+=== 2.4.4 Built-in Humidity ===
203	203
204		-[[image:image-20220522235639-4.png]]
	305	+[[image:image-20220522235639-4.png||height="138" width="722"]]
205	205
206	206	* Humidity:    0x025C/10=60.4%
207	207
208		-=== Ext # ===
	309	+=== 2.4.5 Ext # ===
209	209
210	210	Bytes for External Sensor:
211	211
212		-(% style="width:624px" %)
213		-|(% style="width:139px" %)**EXT # Value**|(% style="width:484px" %)**External Sensor Type**
214		-|(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor
215		-|(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod
	313	+(% border="1" style="background-color:#ffffcc; color:green; width:473px" %)
	314	+|(% style="width:139px" %)**EXT # Value**|(% style="width:331px" %)**External Sensor Type**
	315	+|(% style="width:139px" %)0x01|(% style="width:331px" %)Sensor E3, Temperature Sensor
	316	+|(% style="width:139px" %)0x09|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod
216	216
217		-=== Ext value ===
	318	+=== 2.4.6 Ext value ===
218	218
219		-==== Ext~=1, E3 Temperature Sensor ====
	320	+==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
220	220
221	221	[[image:image-20220522235639-5.png]]
222	222
223		-
224	224	* DS18B20 temp=0x0ADD/100=27.81℃
225	225
226	226	The last 2 bytes of data are meaningless
227	227
228		-
229		-
230	230	[[image:image-20220522235639-6.png]]
231	231
232	232	* External temperature= (0xF54F-65536)/100=-27.37℃
233	233
	332	+(((
234	234	The last 2 bytes of data are meaningless
	334	+)))
235	235
236		-
	336	+(((
237	237	If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
	338	+)))
238	238
239	239
240		-==== Ext~=9, E3 sensor with Unix Timestamp ====
	341	+==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
241	241
242	242	Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
243	243
	345	+(% border="1" style="background-color:#ffffcc; color:green; width:533px" %)
	346	+|(% style="width:96px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:69px" %)**2**|(% style="width:88px" %)**2**|(% style="width:69px" %)**1**|(% style="width:75px" %)**4**
	347	+|(% style="width:96px" %)**Value**|(% style="width:71px" %)[[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]|(% style="width:69px" %)(((
	348	+[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
244	244
245		-(% style="width:697px" %)
246		-|(% style="width:96px" %)**Size(bytes)**|(% style="width:164px" %)**2**|(% style="width:104px" %)**2**|(% style="width:106px" %)**2**|(% style="width:108px" %)**1**|(% style="width:116px" %)**4**
247		-|(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)(((
248		-[[Built-In>>path:#SHT20_Temperature]]
	350	+[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
	351	+)))|(% style="width:88px" %)(((
	352	+BAT Status &
249	249
250		-[[Temperature>>path:#SHT20_Temperature]]
251		-)))|(% style="width:106px" %)(((
252		-[[BAT Status &>>path:#BAT_Humidity]]
	354	+[[Built-in>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
253	253
254		-[[Built-in>>path:#BAT_Humidity]]
	356	+[[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
	357	+)))|(% style="width:69px" %)Status & Ext|(% style="width:75px" %)(((
	358	+[[Unix>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]]
255	255
256		-[[Humidity>>path:#BAT_Humidity]]
257		-)))|(% style="width:108px" %)[[Status & Ext>>path:#Status_EXT]]|(% style="width:116px" %)(((
258		-[[Unix>>path:#Unix_Time_Stamp]]
259		-
260		-[[Time Stamp>>path:#Unix_Time_Stamp]]
	360	+[[Time Stamp>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.1SetTransmitIntervalTime]]
261	261	)))
262	262
263		-* **Battery status & **[[(% class="wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
	363	+* **Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)**
264	264
265		-(% style="width:587px" %)
	365	+(% border="1" style="background-color:#ffffcc; color:green; width:587px" %)
266	266	|Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
267	267	|Value|(% style="width:280px" %)(((
268	268	BAT Status
...	...	@@ -275,7 +275,7 @@
275	275
276	276	11(b): Good   (BAT >= 2.65v)
277	277	)))|(% style="width:136px" %)(((
278		-[[Built-in Humidity>>path:#SHT20_Humidity]]
	378	+[[Built-in Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
279	279
280	280
281	281	)))
...	...	@@ -282,12 +282,10 @@
282	282
283	283	* **Status & Ext Byte**
284	284
285		-(% style="width:732px" %)
	385	+(% border="1" style="background-color:#ffffcc; color:green; width:732px" %)
286	286	|(% style="width:128px" %)**Bits**|(% style="width:102px" %)**7**|(% style="width:145px" %)**6**|(% style="width:117px" %)**5**|(% style="width:147px" %)**4**|(% style="width:90px" %)**[3:0]**
287	287	|(% style="width:128px" %)**Status & Ext**|(% style="width:102px" %)Not Defined|(% style="width:145px" %)Poll Message Flag|(% style="width:117px" %)Sync time OK|(% style="width:147px" %)Unix Time Request|(% style="width:90px" %)(((
288		-Ext:
289		-
290		-0b(1001)
	388	+Ext:0b(1001)
291	291	)))
292	292
293	293	* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
...	...	@@ -294,18 +294,21 @@
294	294	* Sync time OK: 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
295	295	* Unix Time Request:1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
296	296
	395	+== 2.5 Show data on Datacake ==
297	297
298		-== Show data on Datacake ==
299		-
300	300	Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
301	301
302		-
	399	+(((
303	303	**Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
	401	+)))
304	304
	403	+(((
305	305	**Step 2**: Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
	405	+)))
306	306
307		-
	407	+(((
308	308	Add Datacake:
	409	+)))
309	309
310	310	[[image:image-20220523000825-7.png||height="262" width="583"]]
311	311
...	...	@@ -314,19 +314,196 @@
314	314
315	315	[[image:image-20220523000825-8.png||height="453" width="406"]]
316	316
317		-
318	318	In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
319	319
320	320	[[image:image-20220523000825-9.png||height="366" width="392"]]
321	321
	422	+[[image:image-20220523000825-10.png||height="432" width="762"]]
322	322
	424	+== 2.6 Datalog Feature ==
323	323
324		-[[image:image-20220523000825-10.png||height="432" width="762"]]
	426	+This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
325	325
	428	+=== 2.6.1 Unix TimeStamp ===
326	326
	430	+LHT65N uses Unix TimeStamp format based on
327	327
328		-== LED Indicator ==
	432	+[[image:image-20220523001219-11.png||height="97" width="627"]]
329	329
	434	+
	435	+(((
	436	+User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
	437	+)))
	438	+
	439	+(((
	440	+Below is the converter example
	441	+)))
	442	+
	443	+[[image:image-20220523001219-12.png||height="302" width="730"]]
	444	+
	445	+So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	446	+
	447	+
	448	+=== 2.6.2 Set Device Time ===
	449	+
	450	+There are two ways to set device’s time:
	451	+
	452	+**~1. Through LoRaWAN MAC Command (Default settings)**
	453	+
	454	+User need to set SYNCMOD=1 to enable sync time via MAC command.
	455	+
	456	+Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
	457	+
	458	+Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn’t support. If server doesn’t support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.
	459	+
	460	+
	461	+**2. Manually Set Time**
	462	+
	463	+User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
	464	+
	465	+
	466	+=== 2.6.3 Poll sensor value ===
	467	+
	468	+User can poll sensor value based on timestamps from the server. Below is the downlink command.
	469	+
	470	+
	471	+(% border="1" style="width:454px" %)
	472	+|(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
	473	+|(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
	474	+
	475	+Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
	476	+
	477	+
	478	+For example, downlink command 31 5FC5F350 5FC6 0160 05
	479	+
	480	+Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
	481	+
	482	+Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
	483	+
	484	+
	485	+=== 2.6.4 Datalog Uplink payload ===
	486	+
	487	+The Datalog poll reply uplink will use below payload format.
	488	+
	489	+
	490	+Retrieval data payload
	491	+
	492	+(% border="1" %)
	493	+|**Size(bytes)**|**2**|**2**|**2**|**1**|**4**
	494	+|**Value**|[[External sensor data>>path:#Extension_sensor_value]]|(((
	495	+[[Built-In>>path:#SHT20_Temperature]]
	496	+
	497	+[[Temperature>>path:#SHT20_Temperature]]
	498	+)))|(((
	499	+[[Built-in>>path:#SHT20_Humidity]]
	500	+
	501	+[[Humidity>>path:#SHT20_Humidity]]
	502	+)))|[[Poll message flag & Ext>>path:#Poll_EXT]]|(((
	503	+[[Unix Time Stamp>>path:#Unix_Time_Stamp]]
	504	+
	505	+
	506	+)))
	507	+
	508	+Poll message flag & Ext
	509	+
	510	+
	511	+(% border="1" %)
	512	+|**Bits**|**7**|**6**|**5**|**4**|**[3:0]**
	513	+|**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|(((
	514	+Ext:
	515	+
	516	+0b(1001)
	517	+)))
	518	+
	519	+Poll Message Flag: 1: This message is a poll message reply.
	520	+
	521	+* Poll Message Flag is set to 1.
	522	+* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
	523	+
	524	+For example, in US915 band, the max payload for different DR is:
	525	+
	526	+a)      DR0: max is 11 bytes so one entry of data
	527	+
	528	+b)      DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
	529	+
	530	+c)      DR2: total payload includes 11 entries of data
	531	+
	532	+d)      DR3: total payload includes 22 entries of data.
	533	+
	534	+If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0
	535	+
	536	+
	537	+**Example:**
	538	+
	539	+If LHT65N has below data inside Flash:
	540	+
	541	+Flash Addr   |Unix Time | Ext | BAT voltage|  Value
	542	+
	543	+80196E0 21/1/19 04:27:03 1 3145 sht_temp=22.00 sht_hum=32.6 ds_temp=327.67
	544	+
	545	+80196F0 21/1/19 04:28:57 1 3145 sht_temp=21.90 sht_hum=33.1 ds_temp=327.67
	546	+
	547	+8019700 21/1/19 04:30:30 1 3145 sht_temp=21.81 sht_hum=33.4 ds_temp=327.67
	548	+
	549	+8019710 21/1/19 04:40:30 1 3145 sht_temp=21.65 sht_hum=33.7 ds_temp=327.67
	550	+
	551	+8019720 21/1/19 04:50:30 1 3147 sht_temp=21.55 sht_hum=34.1 ds_temp=327.67
	552	+
	553	+8019730 21/1/19 05:00:30 1 3149 sht_temp=21.50 sht_hum=34.1 ds_temp=327.67
	554	+
	555	+8019740 21/1/19 05:10:30 1 3149 sht_temp=21.43 sht_hum=34.6 ds_temp=327.67
	556	+
	557	+8019750 21/1/19 05:20:30 1 3151 sht_temp=21.35 sht_hum=34.9 ds_temp=327.67
	558	+
	559	+
	560	+If user sends below downlink command:
	561	+
	562	+3160065F9760066DA705
	563	+
	564	+ Where : Start time: 60065F97 = time 21/1/19 04:27:03
	565	+
	566	+ Stop time 60066DA7= time 21/1/19 05:27:03
	567	+
	568	+
	569	+LHT65N will uplink this payload.
	570	+
	571	+[[image:image-20220523001219-13.png||height="421" width="727"]]
	572	+
	573	+7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
	574	+
	575	+Where the first 11 bytes is for the first entry:
	576	+
	577	+7FFF089801464160065F97
	578	+
	579	+Ext sensor data=0x7FFF/100=327.67
	580	+
	581	+Temp=0x0898/100=22.00
	582	+
	583	+Hum=0x0146/10=32.6
	584	+
	585	+poll message flag & Ext=0x41,means reply data,Ext=1
	586	+
	587	+Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
	588	+
	589	+
	590	+== 2.7 Alarm Mode ==
	591	+
	592	+Alarm mode feature is added since firmware v1.5. When device is in Alarm mode, it will check the built-in sensor temperature in a short interval. If the temperature exceeds the pre-configure range, it will send an uplink immediately.
	593	+
	594	+
	595	+Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
	596	+
	597	+
	598	+AT Commands for Alarm mode:
	599	+
	600	+**AT+WMOD=1**: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
	601	+
	602	+**AT+CITEMP=1**: The interval to check the temperature for Alarm. (Unit: minute)
	603	+
	604	+
	605	+
	606	+== 2.8 LED Indicator ==
	607	+
330	330	The LHT65N has a triple color LED which for easy shows different stage.
331	331
332	332	While pressing ACT button, the LED will work as per LED status with ACT button.
...	...	@@ -340,17 +340,14 @@
340	340
341	341	----
342	342
343		-== Installation ==
	621	+== 2.9 Installation ==
344	344
345		-[[image:image-20220516231650-1.png||height="632" width="620"]]
	623	+[[image:image-20220516231650-1.png||height="436" width="428"]]
346	346
	625	+= 3. Sensors & Accessories =
347	347
	627	+== 3.1 E3 Temperature Probe ==
348	348
349		-
350		-= Sensors & Accessories =
351		-
352		-== E3 Temperature Probe ==
353		-
354	354	[[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
355	355
356	356
...	...	@@ -362,36 +362,350 @@
362	362	* Operating Range: -40 ~~ 125 °C
363	363	* -55°C to 125°C
364	364	* Working voltage 2.35v ~~ 5v
365		-
366	366
367		-= Battery & How to replace =
	641	+= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
368	368
369		-== Battery Type ==
	643	+Use can configure LHT65N via AT Command or LoRaWAN Downlink.
370	370
	645	+* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
	646	+* LoRaWAN Downlink instruction for different platforms:
	647	+
	648	+[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server>>url:http://wiki.dragino.com/index.php?title=Main_Page#Use_Note_for_Server]]
	649	+
	650	+There are two kinds of commands to configure LHT65N, they are:
	651	+
	652	+* **General Commands**.
	653	+
	654	+These commands are to configure:
	655	+
	656	+* General system settings like: uplink interval.
	657	+* LoRaWAN protocol & radio-related commands.
	658	+
	659	+They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
	660	+
	661	+[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
	662	+
	663	+* **Commands special design for LHT65N**
	664	+
	665	+These commands are only valid for LHT65N, as below:
	666	+
	667	+== 4.1 Set Transmit Interval Time ==
	668	+
	669	+Feature: Change LoRaWAN End Node Transmit Interval.
	670	+
	671	+**AT Command: AT+TDC**
	672	+
	673	+(% border="1" %)
	674	+|**Command Example**|**Function**|**Response**
	675	+|AT+TDC?|Show current transmit Interval|(((
	676	+30000
	677	+
	678	+OK
	679	+
	680	+the interval is 30000ms = 30s
	681	+)))
	682	+|AT+TDC=60000|Set Transmit Interval|(((
	683	+OK
	684	+
	685	+Set transmit interval to 60000ms = 60 seconds
	686	+)))
	687	+
	688	+**Downlink Command: 0x01**
	689	+
	690	+Format: Command Code (0x01) followed by 3 bytes time value.
	691	+
	692	+If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	693	+
	694	+* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	695	+* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	696	+
	697	+== 4.2 Set External Sensor Mode ==
	698	+
	699	+Feature: Change External Sensor Mode.
	700	+
	701	+**AT Command: AT+EXT**
	702	+
	703	+(% border="1" %)
	704	+|**Command Example**|**Function**|**Response**
	705	+|AT+EXT?|Get current external sensor mode|(((
	706	+1
	707	+
	708	+OK
	709	+
	710	+External Sensor mode =1
	711	+)))
	712	+|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
	713	+|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
	714	+
	715	+**Downlink Command: 0xA2**
	716	+
	717	+Total bytes: 2 ~~ 5 bytes
	718	+
	719	+Example:
	720	+
	721	+* 0xA201: Set external sensor type to E1
	722	+* 0xA209: Same as AT+EXT=9
	723	+* 0xA20702003c,Same as AT+SETCNT=60
	724	+
	725	+== 4.3 Enable/Disable uplink Temperature probe ID ==
	726	+
	727	+Feature: If PID is enabled, device will send the temperature probe ID on:
	728	+
	729	+* First Packet after OTAA Join
	730	+* Every 24 hours since the first packet.
	731	+
	732	+PID is default set to disable (0)
	733	+
	734	+
	735	+**AT Command:**
	736	+
	737	+(% border="1" %)
	738	+|**Command Example**|**Function**|**Response**
	739	+|AT+PID=1|Enable PID uplink|OK
	740	+
	741	+**Downlink Command:**
	742	+
	743	+* 0xA800     à AT+PID=0
	744	+* 0xA801     à AT+PID=1
	745	+
	746	+== 4.4 Set Password ==
	747	+
	748	+Feature: Set device password, max 9 digits
	749	+
	750	+**AT Command: AT+PWORD**
	751	+
	752	+(% border="1" %)
	753	+|**Command Example**|**Function**|**Response**
	754	+|AT+PWORD=?|Show password|(((
	755	+123456
	756	+
	757	+
	758	+OK
	759	+)))
	760	+|AT+PWORD=999999|Set password|OK
	761	+
	762	+**Downlink Command:**
	763	+
	764	+No downlink command for this feature.
	765	+
	766	+== 4.5 Quit AT Command ==
	767	+
	768	+Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
	769	+
	770	+**AT Command: AT+DISAT**
	771	+
	772	+(% border="1" %)
	773	+|**Command Example**|**Function**|**Response**
	774	+|AT+DISAT|Quit AT Commands mode|OK
	775	+
	776	+**Downlink Command:**
	777	+
	778	+No downlink command for this feature.
	779	+
	780	+
	781	+== 4.6 Set to sleep mode ==
	782	+
	783	+Feature: Set device to sleep mode
	784	+
	785	+**AT Command: AT+SLEEP**
	786	+
	787	+(% border="1" %)
	788	+| | |
	789	+|**Command Example**|**Function**|**Response**
	790	+|AT+SLEEP|Set to sleep mode|(((
	791	+Clear all stored sensor data…
	792	+
	793	+OK
	794	+)))
	795	+
	796	+**Downlink Command:**
	797	+
	798	+* There is no downlink command to set to Sleep mode.
	799	+
	800	+== 4.7 Set system time ==
	801	+
	802	+Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
	803	+
	804	+**AT Command:**
	805	+
	806	+(% border="1" %)
	807	+|**Command Example**|**Function**
	808	+|AT+TIMESTAMP=1611104352|(((
	809	+OK
	810	+
	811	+Set System time to 2021-01-20 00:59:12
	812	+)))
	813	+
	814	+**Downlink Command:**
	815	+
	816	+0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
	817	+
	818	+== 4.8 Set Time Sync Mode ==
	819	+
	820	+Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
	821	+
	822	+SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
	823	+
	824	+
	825	+**AT Command:**
	826	+
	827	+|**Command Example**|**Function**
	828	+|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
	829	+
	830	+**Downlink Command:**
	831	+
	832	+0x28 01 ~/~/ Same As AT+SYNCMOD=1
	833	+
	834	+0x28 00 ~/~/ Same As AT+SYNCMOD=0
	835	+
	836	+== 4.9 Set Time Sync Interval ==
	837	+
	838	+Feature: Define System time sync interval. SYNCTDC default value: 10 days.
	839	+
	840	+**AT Command:**
	841	+
	842	+(% border="1" %)
	843	+|**Command Example**|**Function**
	844	+|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
	845	+
	846	+**Downlink Command:**
	847	+
	848	+0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
	849	+
	850	+== 4.10 Print data entries base on page. ==
	851	+
	852	+Feature: Print the sector data from start page to stop page (max is 416 pages).
	853	+
	854	+**AT Command: AT+PDTA**
	855	+
	856	+(% border="1" %)
	857	+|**Command Example**|**Response**
	858	+|(((
	859	+AT+PDTA=1,3
	860	+
	861	+
	862	+
	863	+Print page 1 to 3
	864	+)))|(((
	865	+8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31
	866	+
	867	+8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93
	868	+
	869	+8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06
	870	+
	871	+8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12
	872	+
	873	+8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06
	874	+
	875	+8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68
	876	+
	877	+8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56
	878	+
	879	+8019570
	880	+
	881	+8019580
	882	+
	883	+8019590
	884	+
	885	+80195A0
	886	+
	887	+80195B0
	888	+
	889	+80195C0
	890	+
	891	+80195D0
	892	+
	893	+80195E0
	894	+
	895	+80195F0
	896	+
	897	+
	898	+OK
	899	+)))
	900	+
	901	+**Downlink Command:**
	902	+
	903	+No downlink commands for feature
	904	+
	905	+== 4.11 Print last few data entries. ==
	906	+
	907	+Feature: Print the last few data entries
	908	+
	909	+**AT Command: AT+PLDTA**
	910	+
	911	+(% border="1" %)
	912	+|**Command Example**|**Response**
	913	+|(((
	914	+AT+PLDTA=5
	915	+
	916	+
	917	+
	918	+Print last 5 entries
	919	+)))|(((
	920	+Stop Tx and RTP events when read sensor data
	921	+
	922	+1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75
	923	+
	924	+2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43
	925	+
	926	+3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56
	927	+
	928	+4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75
	929	+
	930	+5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43
	931	+
	932	+Start Tx and RTP events
	933	+
	934	+OK
	935	+)))
	936	+
	937	+**Downlink Command:**
	938	+
	939	+No downlink commands for feature
	940	+
	941	+== 4.12 Clear Flash Record ==
	942	+
	943	+Feature: Clear flash storage for data log feature.
	944	+
	945	+**AT Command: AT+CLRDTA**
	946	+
	947	+(% border="1" %)
	948	+|**Command Example**|**Function**|**Response**
	949	+|AT+CLRDTA|Clear date record|(((
	950	+Clear all stored sensor data…
	951	+
	952	+OK
	953	+)))
	954	+
	955	+**Downlink Command: 0xA3**
	956	+
	957	+* Example: 0xA301 ~/~/Same as AT+CLRDTA
	958	+
	959	+= 5. Battery & How to replace =
	960	+
	961	+== 5.1 Battery Type ==
	962	+
371	371	LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
372	372
373	373	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
374	374	[[image:image-20220515075034-1.png||height="208" width="644"]]
375	375
376		-
377	377	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
378	378
379	379
380		-== Replace Battery ==
	971	+== 5.2 Replace Battery ==
381	381
382	382	LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
383	383
384	384	[[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
385	385
	977	+== 5.3 Battery Life Analyze ==
386	386
387		-== Battery Life Analyze ==
388		-
389	389	Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
390	390	https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
391	391
	982	+= 6. Order Info =
392	392
393		-= Order Info =
394		-
395	395	Part Number: (% class="mark" %)**LHT65N-XX**
396	396
397	397	**XX**: The default frequency band
...	...	@@ -409,7 +409,7 @@
409	409
410	410	* **E3**: External Temperature Probe
411	411
412		-= Packing Info =
	1001	+= 7. Packing Info =
413	413
414	414	**Package Includes**:
415	415
...	...	@@ -424,10 +424,10 @@
424	424	* Package Size / pcs : 14.5 x 8 x 5 cm
425	425	* Weight / pcs : 170g
426	426
427		-= FCC Warning =
	1016	+= 8. FCC Warning =
428	428
429	429	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
430	430
431		-(1) This device may not cause harmful interference, and
	1020	+(1) This device may not cause harmful interference；
432	432
433		-(2) this device must accept any interference received, including interference that may cause undesired operation
	1022	+(2) this device must accept any interference received, including interference that may cause undesired operation.

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