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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	+
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.
13	13
14	14	LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
...	...	@@ -15,13 +15,12 @@
15	15
16	16	LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
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.
	28	+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.
19	19
20	20	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
21	21
	32	+== 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
...	...	@@ -34,7 +34,7 @@
34	34	* Tri-color LED to indicate working status
35	35	* Datalog feature
36	36
37		-== Specification: ==
	46	+== 1.3 Specification ==
38	38
39	39	**Built-in Temperature Sensor:**
40	40
...	...	@@ -57,9 +57,9 @@
57	57	* ±2°C accuracy from -55°C to +125°C
58	58	* Operating Range: -55 °C ~~ 125 °C
59	59
60		-= Connect LHT65N to IoT Server =
	69	+= 2. Connect LHT65N to IoT Server =
61	61
62		-== How does LHT65N work? ==
	71	+== 2.1 How does LHT65N work? ==
63	63
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.
65	65
...	...	@@ -66,7 +66,7 @@
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.
67	67
68	68
69		-== How to Activate LHT65N? ==
	78	+== 2.2 How to Activate LHT65N? ==
70	70
71	71	The LHT65N has two working modes:
72	72
...	...	@@ -77,12 +77,13 @@
77	77
78	78	[[image:image-20220515123819-1.png||height="379" width="317"]]
79	79
	89	+(% border="1" %)
80	80	|**Behavior on ACT**|**Function**|**Action**
81	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	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	83	|**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84	84
85		-== Example to join LoRaWAN network ==
	95	+== 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 ===
	106	+=== 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
...	...	@@ -123,7 +123,7 @@
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. ===
	136	+=== 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
...	...	@@ -130,7 +130,7 @@
130	130	[[image:image-20220522233300-8.png]]
131	131
132	132
133		-== Uplink Payload: ==
	143	+== 2.4 Uplink Payload ==
134	134
135	135	The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
136	136
...	...	@@ -137,7 +137,7 @@
137	137	After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
138	138
139	139
140		-(% style="width:572px" %)
	150	+(% border="1" style="width:572px" %)
141	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	142	|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143	143	[[Built-In>>path:#SHT20_Temperature]]
...	...	@@ -153,7 +153,7 @@
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 ===
	166	+=== 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
...	...	@@ -164,7 +164,7 @@
164	164	[[image:image-20220522234118-10.png]]
165	165
166	166
167		-=== BAT-Battery Info ===
	177	+=== 2.4.2 BAT-Battery Info ===
168	168
169	169	These two bytes of BAT include the battery state and the actually voltage
170	170
...	...	@@ -189,7 +189,7 @@
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 ===
	202	+=== 2.4.3 Built-in Temperature ===
193	193
194	194	[[image:image-20220522235639-2.png]]
195	195
...	...	@@ -199,13 +199,13 @@
199	199
200	200	* Temperature:  (0xF5C6-65536)/100=-26.18℃
201	201
202		-=== Built-in Humidity ===
	212	+=== 2.4.4 Built-in Humidity ===
203	203
204	204	[[image:image-20220522235639-4.png]]
205	205
206	206	* Humidity:    0x025C/10=60.4%
207	207
208		-=== Ext # ===
	218	+=== 2.4.5 Ext # ===
209	209
210	210	Bytes for External Sensor:
211	211
...	...	@@ -214,19 +214,16 @@
214	214	|(% style="width:139px" %)0x01|(% style="width:484px" %)Sensor E3, Temperature Sensor
215	215	|(% style="width:139px" %)0x09|(% style="width:484px" %)Sensor E3, Temperature Sensor, Datalog Mod
216	216
217		-=== Ext value ===
	227	+=== 2.4.6 Ext value ===
218	218
219		-==== Ext~=1, E3 Temperature Sensor ====
	229	+==== 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℃
...	...	@@ -233,16 +233,15 @@
233	233
234	234	The last 2 bytes of data are meaningless
235	235
236		-
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℃
238	238
239	239
240		-==== Ext~=9, E3 sensor with Unix Timestamp ====
	246	+==== 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
244	244
245		-(% style="width:697px" %)
	251	+(% border="1" style="width:697px" %)
246	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	247	|(% style="width:96px" %)**Value**|(% style="width:164px" %)[[External temperature>>path:#DS18b20_value]]|(% style="width:104px" %)(((
248	248	[[Built-In>>path:#SHT20_Temperature]]
...	...	@@ -260,9 +260,9 @@
260	260	[[Time Stamp>>path:#Unix_Time_Stamp]]
261	261	)))
262	262
263		-* **Battery status & **[[(% class="wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
	269	+* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
264	264
265		-(% style="width:587px" %)
	271	+(% border="1" style="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
...	...	@@ -282,7 +282,7 @@
282	282
283	283	* **Status & Ext Byte**
284	284
285		-(% style="width:732px" %)
	291	+(% border="1" style="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	288	Ext:
...	...	@@ -294,11 +294,10 @@
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
297		-== Show data on Datacake ==
	303	+== 2.5 Show data on Datacake ==
298	298
299	299	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:
300	300
301		-
302	302	**Step 1**: Be sure that your device is programmed and properly connected to the LoRaWAN network.
303	303
304	304	**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.
...	...	@@ -323,11 +323,11 @@
323	323	[[image:image-20220523000825-10.png||height="432" width="762"]]
324	324
325	325
326		-== Datalog Feature ==
	331	+== 2.6 Datalog Feature ==
327	327
328	328	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.
329	329
330		-=== Unix TimeStamp ===
	335	+=== 2.6.1 Unix TimeStamp ===
331	331
332	332	LHT65N uses Unix TimeStamp format based on
333	333
...	...	@@ -338,12 +338,12 @@
338	338
339	339	Below is the converter example
340	340
341		-[[image:image-20220523001219-12.png||height="353" width="853"]]
	346	+[[image:image-20220523001219-12.png||height="302" width="730"]]
342	342
343	343	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
344	344
345	345
346		-=== Set Device Time ===
	351	+=== 2.6.2 Set Device Time ===
347	347
348	348	There are two ways to set device’s time:
349	349
...	...	@@ -361,16 +361,15 @@
361	361	User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
362	362
363	363
364		-=== Poll sensor value ===
	369	+=== 2.6.3 Poll sensor value ===
365	365
366	366	User can poll sensor value based on timestamps from the server. Below is the downlink command.
367	367
368	368
369		-(% style="width:454px" %)
	374	+(% border="1" style="width:454px" %)
370	370	|(% style="width:69px" %)1byte|(% style="width:129px" %)4bytes|(% style="width:134px" %)4bytes|(% style="width:119px" %)1byte
371	371	|(% style="width:69px" %)31|(% style="width:129px" %)Timestamp start|(% style="width:134px" %)Timestamp end|(% style="width:119px" %)Uplink Interval
372	372
373		-
374	374	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.
375	375
376	376
...	...	@@ -381,7 +381,7 @@
381	381	Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
382	382
383	383
384		-=== Datalog Uplink payload ===
	388	+=== 2.6.4 Datalog Uplink payload ===
385	385
386	386	The Datalog poll reply uplink will use below payload format.
387	387
...	...	@@ -388,6 +388,7 @@
388	388
389	389	Retrieval data payload
390	390
	395	+(% border="1" %)
391	391	|**Size(bytes)**|**2**|**2**|**2**|**1**|**4**
392	392	|**Value**|[[External sensor data>>path:#Extension_sensor_value]]|(((
393	393	[[Built-In>>path:#SHT20_Temperature]]
...	...	@@ -403,10 +403,10 @@
403	403
404	404	)))
405	405
406		-
407	407	Poll message flag & Ext
408	408
409	409
	414	+(% border="1" %)
410	410	|**Bits**|**7**|**6**|**5**|**4**|**[3:0]**
411	411	|**Status & Ext**|Not Defined|Poll Message Flag|Sync time OK|Unix Time Request|(((
412	412	Ext:
...	...	@@ -414,7 +414,6 @@
414	414	0b(1001)
415	415	)))
416	416
417		-
418	418	Poll Message Flag: 1: This message is a poll message reply.
419	419
420	420	* Poll Message Flag is set to 1.
...	...	@@ -467,7 +467,7 @@
467	467
468	468	LHT65N will uplink this payload.
469	469
470		-[[image:image-20220523001219-13.png]]
	474	+[[image:image-20220523001219-13.png||height="421" width="727"]]
471	471
472	472	7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
473	473
...	...	@@ -486,7 +486,7 @@
486	486	Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
487	487
488	488
489		-== Alarm Mode ==
	493	+== 2.7 Alarm Mode ==
490	490
491	491	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.
492	492
...	...	@@ -502,7 +502,7 @@
502	502
503	503
504	504
505		-== LED Indicator ==
	509	+== 2.8 LED Indicator ==
506	506
507	507	The LHT65N has a triple color LED which for easy shows different stage.
508	508
...	...	@@ -517,17 +517,14 @@
517	517
518	518	----
519	519
520		-== Installation ==
	524	+== 2.9 Installation ==
521	521
522		-[[image:image-20220516231650-1.png||height="632" width="620"]]
	526	+[[image:image-20220516231650-1.png||height="436" width="428"]]
523	523
	528	+= 3. Sensors & Accessories =
524	524
	530	+== 3.1 E3 Temperature Probe ==
525	525
526		-
527		-= Sensors & Accessories =
528		-
529		-== E3 Temperature Probe ==
530		-
531	531	[[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
532	532
533	533
...	...	@@ -539,36 +539,350 @@
539	539	* Operating Range: -40 ~~ 125 °C
540	540	* -55°C to 125°C
541	541	* Working voltage 2.35v ~~ 5v
542		-
543	543
544		-= Battery & How to replace =
	544	+= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
545	545
546		-== Battery Type ==
	546	+Use can configure LHT65N via AT Command or LoRaWAN Downlink.
547	547
	548	+* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
	549	+* LoRaWAN Downlink instruction for different platforms:
	550	+
	551	+[[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]]
	552	+
	553	+There are two kinds of commands to configure LHT65N, they are:
	554	+
	555	+* **General Commands**.
	556	+
	557	+These commands are to configure:
	558	+
	559	+* General system settings like: uplink interval.
	560	+* LoRaWAN protocol & radio-related commands.
	561	+
	562	+They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki:
	563	+
	564	+[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
	565	+
	566	+* **Commands special design for LHT65N**
	567	+
	568	+These commands are only valid for LHT65N, as below:
	569	+
	570	+== 4.1 Set Transmit Interval Time ==
	571	+
	572	+Feature: Change LoRaWAN End Node Transmit Interval.
	573	+
	574	+**AT Command: AT+TDC**
	575	+
	576	+(% border="1" %)
	577	+|**Command Example**|**Function**|**Response**
	578	+|AT+TDC?|Show current transmit Interval|(((
	579	+30000
	580	+
	581	+OK
	582	+
	583	+the interval is 30000ms = 30s
	584	+)))
	585	+|AT+TDC=60000|Set Transmit Interval|(((
	586	+OK
	587	+
	588	+Set transmit interval to 60000ms = 60 seconds
	589	+)))
	590	+
	591	+**Downlink Command: 0x01**
	592	+
	593	+Format: Command Code (0x01) followed by 3 bytes time value.
	594	+
	595	+If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	596	+
	597	+* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	598	+* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	599	+
	600	+== 4.2 Set External Sensor Mode ==
	601	+
	602	+Feature: Change External Sensor Mode.
	603	+
	604	+**AT Command: AT+EXT**
	605	+
	606	+(% border="1" %)
	607	+|**Command Example**|**Function**|**Response**
	608	+|AT+EXT?|Get current external sensor mode|(((
	609	+1
	610	+
	611	+OK
	612	+
	613	+External Sensor mode =1
	614	+)))
	615	+|AT+EXT=1|(% colspan="2" %)Set external sensor mode to 1
	616	+|AT+EXT=9|(% colspan="2" %)Set to external DS18B20 with timestamp
	617	+
	618	+**Downlink Command: 0xA2**
	619	+
	620	+Total bytes: 2 ~~ 5 bytes
	621	+
	622	+Example:
	623	+
	624	+* 0xA201: Set external sensor type to E1
	625	+* 0xA209: Same as AT+EXT=9
	626	+* 0xA20702003c,Same as AT+SETCNT=60
	627	+
	628	+== 4.3 Enable/Disable uplink Temperature probe ID ==
	629	+
	630	+Feature: If PID is enabled, device will send the temperature probe ID on:
	631	+
	632	+* First Packet after OTAA Join
	633	+* Every 24 hours since the first packet.
	634	+
	635	+PID is default set to disable (0)
	636	+
	637	+
	638	+**AT Command:**
	639	+
	640	+(% border="1" %)
	641	+|**Command Example**|**Function**|**Response**
	642	+|AT+PID=1|Enable PID uplink|OK
	643	+
	644	+**Downlink Command:**
	645	+
	646	+* 0xA800     à AT+PID=0
	647	+* 0xA801     à AT+PID=1
	648	+
	649	+== 4.4 Set Password ==
	650	+
	651	+Feature: Set device password, max 9 digits
	652	+
	653	+**AT Command: AT+PWORD**
	654	+
	655	+(% border="1" %)
	656	+|**Command Example**|**Function**|**Response**
	657	+|AT+PWORD=?|Show password|(((
	658	+123456
	659	+
	660	+
	661	+OK
	662	+)))
	663	+|AT+PWORD=999999|Set password|OK
	664	+
	665	+**Downlink Command:**
	666	+
	667	+No downlink command for this feature.
	668	+
	669	+== 4.5 Quit AT Command ==
	670	+
	671	+Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
	672	+
	673	+**AT Command: AT+DISAT**
	674	+
	675	+(% border="1" %)
	676	+|**Command Example**|**Function**|**Response**
	677	+|AT+DISAT|Quit AT Commands mode|OK
	678	+
	679	+**Downlink Command:**
	680	+
	681	+No downlink command for this feature.
	682	+
	683	+
	684	+== 4.6 Set to sleep mode ==
	685	+
	686	+Feature: Set device to sleep mode
	687	+
	688	+**AT Command: AT+SLEEP**
	689	+
	690	+(% border="1" %)
	691	+| | |
	692	+|**Command Example**|**Function**|**Response**
	693	+|AT+SLEEP|Set to sleep mode|(((
	694	+Clear all stored sensor data…
	695	+
	696	+OK
	697	+)))
	698	+
	699	+**Downlink Command:**
	700	+
	701	+* There is no downlink command to set to Sleep mode.
	702	+
	703	+== 4.7 Set system time ==
	704	+
	705	+Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
	706	+
	707	+**AT Command:**
	708	+
	709	+(% border="1" %)
	710	+|**Command Example**|**Function**
	711	+|AT+TIMESTAMP=1611104352|(((
	712	+OK
	713	+
	714	+Set System time to 2021-01-20 00:59:12
	715	+)))
	716	+
	717	+**Downlink Command:**
	718	+
	719	+0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
	720	+
	721	+== 4.8 Set Time Sync Mode ==
	722	+
	723	+Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
	724	+
	725	+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.
	726	+
	727	+
	728	+**AT Command:**
	729	+
	730	+|**Command Example**|**Function**
	731	+|AT+SYNCMOD=1|Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)
	732	+
	733	+**Downlink Command:**
	734	+
	735	+0x28 01 ~/~/ Same As AT+SYNCMOD=1
	736	+
	737	+0x28 00 ~/~/ Same As AT+SYNCMOD=0
	738	+
	739	+== 4.9 Set Time Sync Interval ==
	740	+
	741	+Feature: Define System time sync interval. SYNCTDC default value: 10 days.
	742	+
	743	+**AT Command:**
	744	+
	745	+(% border="1" %)
	746	+|**Command Example**|**Function**
	747	+|AT+SYNCTDC=0x0A|Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.
	748	+
	749	+**Downlink Command:**
	750	+
	751	+0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
	752	+
	753	+== 4.10 Print data entries base on page. ==
	754	+
	755	+Feature: Print the sector data from start page to stop page (max is 416 pages).
	756	+
	757	+**AT Command: AT+PDTA**
	758	+
	759	+(% border="1" %)
	760	+|**Command Example**|**Response**
	761	+|(((
	762	+AT+PDTA=1,3
	763	+
	764	+
	765	+
	766	+Print page 1 to 3
	767	+)))|(((
	768	+8019500 19/6/26 16:48 1 2992 sht_temp=28.21 sht_hum=71.5 ds_temp=27.31
	769	+
	770	+8019510 19/6/26 16:53 1 2994 sht_temp=27.64 sht_hum=69.3 ds_temp=26.93
	771	+
	772	+8019520 19/6/26 16:58 1 2996 sht_temp=28.39 sht_hum=72.0 ds_temp=27.06
	773	+
	774	+8019530 19/6/26 17:03 1 2996 sht_temp=27.97 sht_hum=70.4 ds_temp=27.12
	775	+
	776	+8019540 19/6/26 17:08 1 2996 sht_temp=27.80 sht_hum=72.9 ds_temp=27.06
	777	+
	778	+8019550 19/6/26 17:13 1 2998 sht_temp=27.30 sht_hum=72.4 ds_temp=26.68
	779	+
	780	+8019560 19/6/26 17:22 1 2992 sht_temp=26.27 sht_hum=62.3 ds_temp=26.56
	781	+
	782	+8019570
	783	+
	784	+8019580
	785	+
	786	+8019590
	787	+
	788	+80195A0
	789	+
	790	+80195B0
	791	+
	792	+80195C0
	793	+
	794	+80195D0
	795	+
	796	+80195E0
	797	+
	798	+80195F0
	799	+
	800	+
	801	+OK
	802	+)))
	803	+
	804	+**Downlink Command:**
	805	+
	806	+No downlink commands for feature
	807	+
	808	+== 4.11 Print last few data entries. ==
	809	+
	810	+Feature: Print the last few data entries
	811	+
	812	+**AT Command: AT+PLDTA**
	813	+
	814	+(% border="1" %)
	815	+|**Command Example**|**Response**
	816	+|(((
	817	+AT+PLDTA=5
	818	+
	819	+
	820	+
	821	+Print last 5 entries
	822	+)))|(((
	823	+Stop Tx and RTP events when read sensor data
	824	+
	825	+1 19/6/26 13:59 1 3005 sht_temp=27.09 sht_hum=79.5 ds_temp=26.75
	826	+
	827	+2 19/6/26 14:04 1 3007 sht_temp=26.65 sht_hum=74.8 ds_temp=26.43
	828	+
	829	+3 19/6/26 14:09 1 3007 sht_temp=26.91 sht_hum=77.9 ds_temp=26.56
	830	+
	831	+4 19/6/26 14:15 1 3007 sht_temp=26.93 sht_hum=76.7 ds_temp=26.75
	832	+
	833	+5 19/6/26 14:20 1 3007 sht_temp=26.78 sht_hum=76.6 ds_temp=26.43
	834	+
	835	+Start Tx and RTP events
	836	+
	837	+OK
	838	+)))
	839	+
	840	+**Downlink Command:**
	841	+
	842	+No downlink commands for feature
	843	+
	844	+== 4.12 Clear Flash Record ==
	845	+
	846	+Feature: Clear flash storage for data log feature.
	847	+
	848	+**AT Command: AT+CLRDTA**
	849	+
	850	+(% border="1" %)
	851	+|**Command Example**|**Function**|**Response**
	852	+|AT+CLRDTA|Clear date record|(((
	853	+Clear all stored sensor data…
	854	+
	855	+OK
	856	+)))
	857	+
	858	+**Downlink Command: 0xA3**
	859	+
	860	+* Example: 0xA301 ~/~/Same as AT+CLRDTA
	861	+
	862	+= 5. Battery & How to replace =
	863	+
	864	+== 5.1 Battery Type ==
	865	+
548	548	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.
549	549
550	550	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
551	551	[[image:image-20220515075034-1.png||height="208" width="644"]]
552	552
553		-
554	554	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
555	555
556	556
557		-== Replace Battery ==
	874	+== 5.2 Replace Battery ==
558	558
559	559	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.
560	560
561	561	[[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
562	562
	880	+== 5.3 Battery Life Analyze ==
563	563
564		-== Battery Life Analyze ==
565		-
566	566	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:
567	567	https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
568	568
	885	+= 6. Order Info =
569	569
570		-= Order Info =
571		-
572	572	Part Number: (% class="mark" %)**LHT65N-XX**
573	573
574	574	**XX**: The default frequency band
...	...	@@ -586,7 +586,7 @@
586	586
587	587	* **E3**: External Temperature Probe
588	588
589		-= Packing Info =
	904	+= 7. Packing Info =
590	590
591	591	**Package Includes**:
592	592
...	...	@@ -601,10 +601,10 @@
601	601	* Package Size / pcs : 14.5 x 8 x 5 cm
602	602	* Weight / pcs : 170g
603	603
604		-= FCC Warning =
	919	+= 8. FCC Warning =
605	605
606	606	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
607	607
608		-(1) This device may not cause harmful interference, and
	923	+(1) This device may not cause harmful interference；
609	609
610		-(2) this device must accept any interference received, including interference that may cause undesired operation
	925	+(2) this device must accept any interference received, including interference that may cause undesired operation.

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