Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

Version 98.1 by Xiaoling on 2022/05/25 11:05

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55.2	1	(% style="text-align:center" %)
78.1	2	[[image:image-20220523115324-1.jpeg\|\|height="317" width="317"]]
55.2	3
2.1	4
56.2	5	LHT65N LoRaWAN Temperature & Humidity Sensor Manual
	6
	7
	8
77.2	9
56.2	10	Table of Contents：
	11
55.2	12	{{toc/}}
2.1	13
55.4	14
	15
77.3	16
78.1	17	= 1. Introduction =
52.2	18
55.2	19	== 1.1 What is LHT65N Temperature & Humidity Sensor ==
52.2	20
56.3	21	(((
56.2	22	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(%%).
56.3	23	)))
2.1	24
56.3	25	(((
2.1	26	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.
56.3	27	)))
2.1	28
56.3	29	(((
6.1	30	LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
56.3	31	)))
2.1	32
56.3	33	(((
2.1	34	LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
56.3	35	)))
2.1	36
56.3	37	(((
56.2	38	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.
56.3	39	)))
2.1	40
56.3	41	(((
6.1	42	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
56.3	43	)))
2.1	44
55.2	45	== 1.2 Features ==
2.1	46
	47	* Wall mountable
	48	* LoRaWAN v1.0.3 Class A protocol
	49	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
	50	* AT Commands to change parameters
	51	* Remote configure parameters via LoRaWAN Downlink
15.1	52	* Firmware upgradeable via program port
6.1	53	* Built-in 2400mAh battery for up to 10 years of use.
2.1	54	* Built-in Temperature & Humidity sensor
	55	* Optional External Sensors
6.1	56	* Tri-color LED to indicate working status
2.1	57	* Datalog feature
	58
55.2	59	== 1.3 Specification ==
2.1	60
56.3	61	(((
2.1	62	Built-in Temperature Sensor:
56.3	63	)))
2.1	64
56.3	65	* (((
	66	Resolution: 0.01 °C
	67	)))
	68	* (((
	69	Accuracy Tolerance : Typ ±0.3 °C
	70	)))
	71	* (((
	72	Long Term Drift: < 0.02 °C/yr
	73	)))
	74	* (((
	75	Operating Range: -40 ~~ 85 °C
	76	)))
2.1	77
56.3	78	(((
2.1	79	Built-in Humidity Sensor:
56.3	80	)))
2.1	81
56.3	82	* (((
	83	Resolution: 0.04 %RH
	84	)))
	85	* (((
	86	Accuracy Tolerance : Typ ±3 %RH
	87	)))
	88	* (((
	89	Long Term Drift: < 0.02 °C/yr
	90	)))
	91	* (((
	92	Operating Range: 0 ~~ 96 %RH
	93	)))
2.1	94
56.3	95	(((
6.1	96	External Temperature Sensor:
56.3	97	)))
2.1	98
56.3	99	* (((
	100	Resolution: 0.0625 °C
	101	)))
	102	* (((
	103	±0.5°C accuracy from -10°C to +85°C
	104	)))
	105	* (((
	106	±2°C accuracy from -55°C to +125°C
	107	)))
	108	* (((
	109	Operating Range: -55 °C ~~ 125 °C
	110	)))
2.1	111
55.2	112	= 2. Connect LHT65N to IoT Server =
18.1	113
55.2	114	== 2.1 How does LHT65N work? ==
18.1	115
56.4	116	(((
18.1	117	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.
56.4	118	)))
18.1	119
56.4	120	(((
18.1	121	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.
56.4	122	)))
18.1	123
55.2	124	== 2.2 How to Activate LHT65N? ==
18.1	125
	126	The LHT65N has two working modes:
	127
	128	* Deep Sleep Mode: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
19.1	129	* 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.
18.1	130
56.5	131	(((
18.1	132	The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
56.5	133	)))
18.1	134
	135	[[image:image-20220515123819-1.png\|\|height="379" width="317"]]
	136
77.7	137	[[image:image-20220523153201-19.png\|\|height="180" width="818"]]
18.1	138
96.2	139	(% border="1" style="background-color:#ffffcc; color:green; width:878px" %)
	140	\|=Behavior on ACT\|=Function\|=(% style="width: 561px;" %)Action
	141	\|Pressing ACT between 1s < time < 3s\|Test uplink status\|(% style="width:561px" %)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.
	142	\|Pressing ACT for more than 3s\|Active Device\|(% style="width:561px" %)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.
	143	\|Fast press ACT 5 times\|Deactivate Device\|(% style="width:561px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
	144
55.2	145	== 2.3 Example to join LoRaWAN network ==
32.1	146
	147	(% class="wikigeneratedid" %)
	148	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.
	149
	150	(% class="wikigeneratedid" %)
	151	[[image:image-20220522232442-1.png\|\|height="387" width="648"]]
	152
	153	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:
	154
	155
55.3	156	=== 2.3.1 Step 1: Create Device n TTN ===
32.1	157
	158	Create a device in TTN V3 with the OTAA keys from LHT65N.
	159
	160	Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
	161
	162	[[image:image-20220522232812-2.png\|\|height="219" width="279"]]
	163
	164	User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
	165
	166	Add APP EUI in the application.
	167
	168	[[image:image-20220522232916-3.png]]
	169
	170	[[image:image-20220522232932-4.png]]
	171
	172	[[image:image-20220522232954-5.png]]
	173
	174	Note: LHT65N use same payload as LHT65.
	175
	176	[[image:image-20220522233026-6.png]]
	177
	178
	179	Input APP EUI, APP KEY and DEV EUI:
	180
	181	[[image:image-20220522233118-7.png]]
	182
	183
55.2	184	=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
32.1	185
	186	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.
	187
57.3	188	[[image:image-20220522233300-8.png\|\|height="219" width="722"]]
32.1	189
	190
55.3	191	== 2.4 Uplink Payload ==
35.1	192
57.2	193	The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)every 20 minutes(%%) send one uplink by default.
35.1	194
57.2	195	After each uplink, the (% style="color:blue" %)BLUE LED(%%) will blink once.
35.1	196
76.2	197	(% border="1" style="background-color:#ffffcc; color:green; width:426px" %)
	198	\|(% style="width:97px" %)(((
57.10	199	Size(bytes)
76.2	200	)))\|(% style="width:39px" %)(((
57.10	201	2
76.2	202	)))\|(% style="width:100px" %)(((
57.10	203	2
76.2	204	)))\|(% style="width:77px" %)(((
57.10	205	2
76.2	206	)))\|(% style="width:47px" %)(((
	207	1
57.10	208	)))\|(% style="width:51px" %)(((
	209	4
	210	)))
76.2	211	\|(% style="width:97px" %)(((
57.10	212	Value
76.2	213	)))\|(% style="width:39px" %)(((
96.1	214	[[BAT>>\|\|anchor="H2.4.2BAT-BatteryInfo"]]
76.2	215	)))\|(% style="width:100px" %)(((
57.10	216	(((
95.1	217	[[Built-In Temperature>>\|\|anchor="H2.4.3Built-inTemperature"]]
57.10	218	)))
76.2	219	)))\|(% style="width:77px" %)(((
57.10	220	(((
57.8	221	[[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]]
57.10	222	)))
57.8	223
57.10	224	(((
57.8	225	[[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]]
57.10	226	)))
76.2	227	)))\|(% style="width:47px" %)(((
77.7	228	[[Ext>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.5Ext23]] #
57.10	229	)))\|(% style="width:51px" %)(((
	230	[[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]]
	231	)))
57.8	232
35.1	233	* The First 6 bytes: has fix meanings for every LHT65N.
	234	* The 7th byte (EXT #): defines the external sensor model.
	235	* 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.)
	236
55.4	237	=== 2.4.1 Decoder in TTN V3 ===
35.1	238
	239	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.
	240
	241	Below is the position to put the decoder and LHT65N decoder can be download from here:
	242
42.1	243	[[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
35.1	244
57.4	245	[[image:image-20220522234118-10.png\|\|height="353" width="729"]]
35.1	246
55.4	247	=== 2.4.2 BAT-Battery Info ===
42.1	248
	249	These two bytes of BAT include the battery state and the actually voltage
	250
76.2	251	[[image:image-20220523152839-18.png]]
42.1	252
57.5	253	[[image:image-20220522235639-1.png\|\|height="139" width="727"]]
42.1	254
	255	Check the battery voltage for LHT65N.
	256
	257	* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
	258	* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
	259
55.4	260	=== 2.4.3 Built-in Temperature ===
42.1	261
57.5	262	[[image:image-20220522235639-2.png\|\|height="138" width="722"]]
42.1	263
	264	* Temperature: 0x0ABB/100=27.47℃
	265
	266	[[image:image-20220522235639-3.png]]
	267
	268	* Temperature: (0xF5C6-65536)/100=-26.18℃
	269
55.4	270	=== 2.4.4 Built-in Humidity ===
42.1	271
57.5	272	[[image:image-20220522235639-4.png\|\|height="138" width="722"]]
42.1	273
	274	* Humidity: 0x025C/10=60.4%
	275
55.4	276	=== 2.4.5 Ext # ===
42.1	277
	278	Bytes for External Sensor:
	279
76.2	280	[[image:image-20220523152822-17.png]]
42.1	281
55.4	282	=== 2.4.6 Ext value ===
42.1	283
55.4	284	==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
42.1	285
	286	[[image:image-20220522235639-5.png]]
	287
	288	* DS18B20 temp=0x0ADD/100=27.81℃
	289
	290	The last 2 bytes of data are meaningless
	291
	292	[[image:image-20220522235639-6.png]]
	293
	294	* External temperature= (0xF54F-65536)/100=-27.37℃
	295
57.5	296	(((
42.1	297	The last 2 bytes of data are meaningless
57.5	298	)))
42.1	299
57.5	300	(((
42.1	301	If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
57.5	302	)))
42.1	303
	304
55.4	305	==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
42.1	306
	307	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:
	308
76.11	309	(% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
73.2	310	\|(% style="width:96px" %)(((
76.3	311	Size(bytes)
	312	)))\|(% style="width:71px" %)(((
	313	2
	314	)))\|(% style="width:99px" %)(((
	315	2
	316	)))\|(% style="width:132px" %)(((
	317	2
	318	)))\|(% style="width:54px" %)(((
	319	1
	320	)))\|(% style="width:64px" %)(((
	321	4
	322	)))
	323	\|(% style="width:96px" %)(((
73.2	324	Value
	325	)))\|(% style="width:71px" %)(((
	326	[[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]]
	327	)))\|(% style="width:99px" %)(((
	328	(((
57.5	329	[[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]]
73.2	330	)))
42.1	331
73.2	332	(((
57.5	333	[[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]]
73.2	334	)))
	335	)))\|(% style="width:132px" %)(((
	336	(((
57.5	337	BAT Status &
73.2	338	)))
42.1	339
73.2	340	(((
	341	[[Built-in 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]]
	342	)))
	343	)))\|(% style="width:54px" %)(((
	344	Status & Ext
	345	)))\|(% style="width:64px" %)(((
	346	(((
57.11	347	[[Unix 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]]
42.1	348	)))
73.2	349	)))
42.1	350
57.6	351	* Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)
42.1	352
57.11	353	(% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
	354	\|(% style="width:65px" %)Bit(bit)\|(% style="width:267px" %)[15:14]\|(% style="width:134px" %)[11:0]
	355	\|(% style="width:65px" %)Value\|(% style="width:267px" %)(((
42.1	356	BAT Status
	357
	358	00(b): Ultra Low ( BAT <= 2.50v)
	359
	360	01(b): Low (2.50v <=BAT <= 2.55v)
	361
	362	10(b): OK (2.55v <= BAT <=2.65v)
	363
	364	11(b): Good (BAT >= 2.65v)
57.11	365	)))\|(% style="width:134px" %)(((
57.5	366	[[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]]
42.1	367
	368
	369	)))
	370
	371	* Status & Ext Byte
	372
73.2	373	[[image:image-20220523152434-16.png]]
42.1	374
	375	* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
	376	* 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.
	377	* 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)
	378
55.4	379	== 2.5 Show data on Datacake ==
42.1	380
47.1	381	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:
	382
57.6	383	(((
47.1	384	Step 1: Be sure that your device is programmed and properly connected to the LoRaWAN network.
57.6	385	)))
47.1	386
57.6	387	(((
47.1	388	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.
57.6	389	)))
47.1	390
57.6	391	(((
47.1	392	Add Datacake:
57.6	393	)))
47.1	394
	395	[[image:image-20220523000825-7.png\|\|height="262" width="583"]]
	396
	397
	398	Select default key as Access Key:
	399
	400	[[image:image-20220523000825-8.png\|\|height="453" width="406"]]
	401
	402	In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
	403
	404	[[image:image-20220523000825-9.png\|\|height="366" width="392"]]
	405
57.12	406	[[image:image-20220523000825-10.png\|\|height="413" width="728"]]
47.1	407
55.4	408	== 2.6 Datalog Feature ==
47.1	409
79.1	410	Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
51.1	411
79.1	412	=== 2.6.1 Ways to get datalog via LoRaWAN ===
51.1	413
80.1	414	There are two methods:
79.1	415
90.1	416	1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>\|\|anchor="H2.6.4Pollsensorvalue"]] for specify time range.
93.1	417	1. Set [[PNACKMD=1>>\|\|anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after network recover.
80.1	418
79.1	419	=== 2.6.2 Unix TimeStamp ===
	420
51.1	421	LHT65N uses Unix TimeStamp format based on
	422
	423	[[image:image-20220523001219-11.png\|\|height="97" width="627"]]
	424
	425
57.6	426	(((
51.1	427	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
57.6	428	)))
51.1	429
57.6	430	(((
51.1	431	Below is the converter example
57.6	432	)))
51.1	433
57.11	434	[[image:image-20220523001219-12.png\|\|height="298" width="720"]]
51.1	435
	436	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	437
79.1	438	=== 2.6.3 Set Device Time ===
51.1	439
57.11	440	(((
51.1	441	There are two ways to set device’s time:
57.11	442	)))
51.1	443
57.11	444	(((
51.1	445	~1. Through LoRaWAN MAC Command (Default settings)
57.11	446	)))
51.1	447
57.11	448	(((
51.1	449	User need to set SYNCMOD=1 to enable sync time via MAC command.
57.11	450	)))
51.1	451
57.11	452	(((
51.1	453	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).
57.11	454	)))
51.1	455
57.11	456	(((
51.1	457	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.
57.11	458	)))
51.1	459
57.11	460	(((
	461
	462	)))
51.1	463
57.11	464	(((
51.1	465	2. Manually Set Time
57.11	466	)))
51.1	467
57.11	468	(((
51.1	469	User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
57.11	470	)))
51.1	471
83.1	472	=== 2.6.4 Poll sensor value ===
51.1	473
	474	User can poll sensor value based on timestamps from the server. Below is the downlink command.
	475
73.2	476	[[image:image-20220523152302-15.png]]
51.1	477
57.12	478	(((
51.1	479	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.
57.12	480	)))
51.1	481
57.12	482	(((
77.7	483	For example, downlink command (% style="display:none" %) (%%)31 5FC5F350 5FC6 0160 05
57.12	484	)))
51.1	485
57.12	486	(((
51.1	487	Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
57.12	488	)))
51.1	489
57.12	490	(((
51.1	491	Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
57.12	492	)))
51.1	493
	494
79.1	495	=== 2.6.5 Datalog Uplink payload ===
51.1	496
	497	The Datalog poll reply uplink will use below payload format.
	498
57.13	499	(((
58.2	500	Retrieval data payload
57.13	501	)))
51.1	502
76.11	503	(% border="1" style="background-color:#ffffcc; color:green; width:510px" %)
58.6	504	\|(% style="width:93px" %)(((
76.5	505	(((
58.6	506	Size(bytes)
76.5	507	)))
58.6	508	)))\|(% style="width:71px" %)(((
76.5	509	(((
58.6	510	2
76.5	511	)))
58.6	512	)))\|(% style="width:102px" %)(((
76.5	513	(((
58.6	514	2
76.5	515	)))
58.6	516	)))\|(% style="width:86px" %)(((
76.5	517	(((
58.6	518	2
76.5	519	)))
76.6	520	)))\|(% style="width:86px" %)(((
76.5	521	(((
58.6	522	1
76.5	523	)))
76.6	524	)))\|(% style="width:48px" %)(((
76.5	525	(((
58.6	526	4
	527	)))
76.5	528	)))
58.6	529	\|(% style="width:93px" %)(((
76.5	530	(((
58.6	531	Value
76.5	532	)))
58.6	533	)))\|(% style="width:71px" %)(((
76.5	534	(((
58.6	535	[[External sensor data>>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]]
76.5	536	)))
58.6	537	)))\|(% style="width:102px" %)(((
	538	(((
76.5	539	(((
58.6	540	[[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]]
	541	)))
76.5	542	)))
58.6	543
	544	(((
76.5	545	(((
58.6	546	[[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]]
	547	)))
76.5	548	)))
58.6	549	)))\|(% style="width:86px" %)(((
	550	(((
76.5	551	(((
58.6	552	[[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]]
	553	)))
76.5	554	)))
58.6	555
	556	(((
76.5	557	(((
58.6	558	[[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]]
	559	)))
76.5	560	)))
76.6	561	)))\|(% style="width:86px" %)(((
76.5	562	(((
58.6	563	[[Poll message flag & Ext>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.6.4DatalogUplinkpayload]]
76.5	564	)))
76.6	565	)))\|(% style="width:48px" %)(((
58.6	566	(((
76.5	567	(((
57.13	568	[[Unix 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/#H2.6.1UnixTimeStamp]]
58.6	569	)))
76.5	570	)))
51.1	571
58.6	572	(((
76.5	573	(((
51.1	574
	575	)))
58.6	576	)))
76.5	577	)))
51.1	578
58.2	579	Poll message flag & Ext
51.1	580
73.2	581	[[image:image-20220523152208-14.png]]
51.1	582
58.8	583	(((
58.2	584	(((
51.1	585	Poll Message Flag: 1: This message is a poll message reply.
58.2	586	)))
73.2	587	)))
51.1	588
58.2	589	* (((
73.2	590	(((
58.2	591	Poll Message Flag is set to 1.
	592	)))
73.2	593	)))
58.2	594	* (((
73.2	595	(((
58.2	596	Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
	597	)))
73.2	598	)))
51.1	599
58.2	600	(((
73.2	601	(((
51.1	602	For example, in US915 band, the max payload for different DR is:
58.2	603	)))
73.2	604	)))
51.1	605
58.2	606	(((
73.2	607	(((
58.2	608	a) DR0: max is 11 bytes so one entry of data
	609	)))
73.2	610	)))
51.1	611
58.2	612	(((
73.2	613	(((
58.2	614	b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
	615	)))
73.2	616	)))
51.1	617
58.2	618	(((
73.2	619	(((
58.2	620	c) DR2: total payload includes 11 entries of data
	621	)))
73.2	622	)))
51.1	623
58.2	624	(((
73.2	625	(((
58.2	626	d) DR3: total payload includes 22 entries of data.
	627	)))
73.2	628	)))
51.1	629
58.2	630	(((
73.2	631	(((
51.1	632	If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0
58.2	633	)))
73.2	634	)))
51.1	635
	636
	637	Example:
	638
	639	If LHT65N has below data inside Flash:
	640
58.2	641	[[image:image-20220523144455-1.png\|\|height="335" width="735"]]
	642
76.6	643	(((
58.4	644	If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
76.6	645	)))
51.1	646
76.6	647	(((
51.1	648	Where : Start time: 60065F97 = time 21/1/19 04:27:03
76.6	649	)))
51.1	650
76.6	651	(((
51.1	652	Stop time 60066DA7= time 21/1/19 05:27:03
76.6	653	)))
51.1	654
76.6	655	(((
	656
	657	)))
51.1	658
76.6	659	(((
51.1	660	LHT65N will uplink this payload.
76.6	661	)))
51.1	662
55.4	663	[[image:image-20220523001219-13.png\|\|height="421" width="727"]]
51.1	664
	665	7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
	666
	667	Where the first 11 bytes is for the first entry:
	668
	669	7FFF089801464160065F97
	670
	671	Ext sensor data=0x7FFF/100=327.67
	672
	673	Temp=0x0898/100=22.00
	674
	675	Hum=0x0146/10=32.6
	676
	677	poll message flag & Ext=0x41,means reply data,Ext=1
	678
	679	Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
	680
55.4	681	== 2.7 Alarm Mode ==
51.1	682
	683	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.
	684
76.6	685	(((
58.10	686	(% style="color:red" %)Note: Alarm mode will increase a little big the power consumption, we recommend extending the normal reading time when enabling this feature.
76.6	687	)))
51.1	688
76.6	689	(((
58.10	690	AT Commands for Alarm mode:
76.6	691	)))
51.1	692
58.10	693	(% class="box infomessage" %)
	694	(((
76.6	695	(((
51.1	696	AT+WMOD=1: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
58.10	697	)))
76.6	698	)))
51.1	699
58.10	700	(% class="box infomessage" %)
	701	(((
76.6	702	(((
51.1	703	AT+CITEMP=1: The interval to check the temperature for Alarm. (Unit: minute)
58.10	704	)))
76.6	705	)))
51.1	706
55.4	707	== 2.8 LED Indicator ==
18.1	708
58.10	709	(((
19.1	710	The LHT65N has a triple color LED which for easy shows different stage.
58.10	711	)))
19.1	712
58.10	713	(((
19.1	714	While pressing ACT button, the LED will work as per LED status with ACT button.
58.10	715	)))
19.1	716
58.10	717	(((
19.1	718	In a normal working state:
58.10	719	)))
19.1	720
58.10	721	* (((
	722	For each uplink, the BLUE LED or RED LED will blink once.
	723	)))
	724	* (((
	725	BLUE LED when an external sensor is connected
	726	)))
	727	* (((
	728	RED LED when an external sensor is not connected
	729	)))
	730	* (((
	731	For each success downlink, the PURPLE LED will blink once
	732	)))
19.1	733
23.1	734	----
19.1	735
55.4	736	== 2.9 Installation ==
21.1	737
52.1	738	[[image:image-20220516231650-1.png\|\|height="436" width="428"]]
21.1	739
55.4	740	= 3. Sensors & Accessories =
21.1	741
55.4	742	== 3.1 E3 Temperature Probe ==
21.1	743
14.1	744	[[image:image-20220515080154-4.png\|\|height="182" width="161"]] [[image:image-20220515080330-5.png\|\|height="201" width="195"]]
	745
	746
	747	With Temperature sensor with 2 meters cable long
	748
	749	* Resolution: 0.0625 °C
	750	* ±0.5°C accuracy from -10°C to +85°C
	751	* ±2°C accuracy from -55°C to +125°C
	752	* Operating Range: -40 ~~ 125 °C
	753	* -55°C to 125°C
	754	* Working voltage 2.35v ~~ 5v
	755
55.4	756	= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
52.1	757
76.7	758	(((
52.1	759	Use can configure LHT65N via AT Command or LoRaWAN Downlink.
76.7	760	)))
52.1	761
76.7	762	* (((
	763	AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
	764	)))
	765	* (((
	766	LoRaWAN Downlink instruction for different platforms:
	767	)))
52.1	768
76.7	769	(((
52.1	770	[[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]]
76.7	771	)))
52.1	772
76.7	773	(((
52.1	774	There are two kinds of commands to configure LHT65N, they are:
76.7	775	)))
52.1	776
76.7	777	(((
58.10	778	(% style="color:#4f81bd" %)* General Commands.
76.7	779	)))
52.1	780
76.7	781	(((
52.1	782	These commands are to configure:
76.7	783	)))
52.1	784
76.7	785	* (((
	786	General system settings like: uplink interval.
	787	)))
	788	* (((
	789	LoRaWAN protocol & radio-related commands.
	790	)))
52.1	791
76.7	792	(((
52.1	793	They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~~). These commands can be found on the wiki:
76.7	794	)))
52.1	795
76.7	796	(((
52.1	797	[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
76.7	798	)))
52.1	799
76.7	800	(((
58.10	801	(% style="color:#4f81bd" %)* Commands special design for LHT65N
76.7	802	)))
52.1	803
76.7	804	(((
52.1	805	These commands are only valid for LHT65N, as below:
76.7	806	)))
52.1	807
55.4	808	== 4.1 Set Transmit Interval Time ==
52.1	809
	810	Feature: Change LoRaWAN End Node Transmit Interval.
	811
	812	AT Command: AT+TDC
	813
66.2	814	[[image:image-20220523150701-2.png]]
52.1	815
76.8	816	(((
52.1	817	Downlink Command: 0x01
76.8	818	)))
52.1	819
76.8	820	(((
52.1	821	Format: Command Code (0x01) followed by 3 bytes time value.
76.8	822	)))
52.1	823
76.8	824	(((
52.1	825	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
76.8	826	)))
52.1	827
76.8	828	* (((
	829	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	830	)))
	831	* (((
	832	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	833	)))
52.1	834
55.4	835	== 4.2 Set External Sensor Mode ==
52.1	836
	837	Feature: Change External Sensor Mode.
	838
	839	AT Command: AT+EXT
	840
66.2	841	[[image:image-20220523150759-3.png]]
52.1	842
76.8	843	(((
52.1	844	Downlink Command: 0xA2
76.8	845	)))
52.1	846
76.8	847	(((
52.1	848	Total bytes: 2 ~~ 5 bytes
76.8	849	)))
52.1	850
76.8	851	(((
66.2	852	Example:
76.8	853	)))
52.1	854
76.8	855	* (((
	856	0xA201: Set external sensor type to E1
	857	)))
	858	* (((
	859	0xA209: Same as AT+EXT=9
	860	)))
	861	* (((
	862	0xA20702003c,Same as AT+SETCNT=60
	863	)))
52.1	864
55.4	865	== 4.3 Enable/Disable uplink Temperature probe ID ==
52.1	866
	867	Feature: If PID is enabled, device will send the temperature probe ID on:
	868
	869	* First Packet after OTAA Join
	870	* Every 24 hours since the first packet.
	871
	872	PID is default set to disable (0)
	873
	874	AT Command:
	875
66.2	876	[[image:image-20220523150928-4.png]]
52.1	877
	878	Downlink Command:
	879
66.2	880	* 0xA800 ~-~-> AT+PID=0
	881	* 0xA801 ~-~-> AT+PID=1
52.1	882
55.4	883	== 4.4 Set Password ==
52.1	884
	885	Feature: Set device password, max 9 digits
	886
	887	AT Command: AT+PWORD
	888
66.2	889	[[image:image-20220523151052-5.png]]
52.1	890
76.8	891	(((
52.1	892	Downlink Command:
76.8	893	)))
52.1	894
76.8	895	(((
52.1	896	No downlink command for this feature.
76.8	897	)))
52.1	898
55.4	899	== 4.5 Quit AT Command ==
52.1	900
	901	Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
	902
	903	AT Command: AT+DISAT
	904
66.2	905	[[image:image-20220523151132-6.png]]
52.1	906
	907	Downlink Command:
	908
	909	No downlink command for this feature.
	910
55.4	911	== 4.6 Set to sleep mode ==
52.1	912
	913	Feature: Set device to sleep mode
	914
	915	AT Command: AT+SLEEP
	916
66.2	917	[[image:image-20220523151218-7.png]]
52.1	918
	919	Downlink Command:
	920
	921	* There is no downlink command to set to Sleep mode.
	922
55.4	923	== 4.7 Set system time ==
52.1	924
	925	Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
	926
	927	AT Command:
	928
66.2	929	[[image:image-20220523151253-8.png]]
52.1	930
	931	Downlink Command:
	932
	933	0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
	934
55.4	935	== 4.8 Set Time Sync Mode ==
52.1	936
76.8	937	(((
52.1	938	Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
76.8	939	)))
52.1	940
76.8	941	(((
52.1	942	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.
76.8	943	)))
52.1	944
76.8	945	(((
52.1	946	AT Command:
76.8	947	)))
52.1	948
66.2	949	[[image:image-20220523151336-9.png]]
52.1	950
	951	Downlink Command:
	952
	953	0x28 01 ~/~/ Same As AT+SYNCMOD=1
	954
	955	0x28 00 ~/~/ Same As AT+SYNCMOD=0
	956
55.4	957	== 4.9 Set Time Sync Interval ==
52.1	958
	959	Feature: Define System time sync interval. SYNCTDC default value: 10 days.
	960
	961	AT Command:
	962
70.2	963	[[image:image-20220523151411-10.png]]
52.1	964
	965	Downlink Command:
	966
	967	0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
	968
55.4	969	== 4.10 Print data entries base on page. ==
52.1	970
	971	Feature: Print the sector data from start page to stop page (max is 416 pages).
	972
	973	AT Command: AT+PDTA
	974
70.2	975	[[image:image-20220523151450-11.png]]
52.1	976
	977	Downlink Command:
	978
	979	No downlink commands for feature
	980
55.4	981	== 4.11 Print last few data entries. ==
52.1	982
	983	Feature: Print the last few data entries
	984
	985	AT Command: AT+PLDTA
	986
70.2	987	[[image:image-20220523151524-12.png]]
52.1	988
	989	Downlink Command:
	990
	991	No downlink commands for feature
	992
55.4	993	== 4.12 Clear Flash Record ==
52.1	994
	995	Feature: Clear flash storage for data log feature.
	996
	997	AT Command: AT+CLRDTA
	998
70.2	999	[[image:image-20220523151556-13.png]]
52.1	1000
	1001	Downlink Command: 0xA3
	1002
	1003	* Example: 0xA301 ~/~/Same as AT+CLRDTA
	1004
90.1	1005	== 4.13 Auto Send None-ACK messages ==
	1006
	1007	Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
	1008
	1009
	1010	AT Command: AT+PNACKMD
	1011
	1012	The default factory setting is 0
	1013
	1014	\|Command Example\|Function\|Response
	1015	\|AT+PNACKMD=1\|Poll None-ACK message\|OK
	1016
	1017	Downlink Command: 0x34
	1018
	1019	* Example: 0x3401 ~/~/Same as AT+PNACKMD=1
	1020
55.4	1021	= 5. Battery & How to replace =
52.1	1022
55.4	1023	== 5.1 Battery Type ==
11.1	1024
	1025	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.
	1026
73.2	1027	(((
11.1	1028	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
14.1	1029	[[image:image-20220515075034-1.png\|\|height="208" width="644"]]
73.2	1030	)))
11.1	1031
73.2	1032	(((
11.1	1033	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
	1034
73.2	1035	)))
11.1	1036
55.4	1037	== 5.2 Replace Battery ==
11.1	1038
	1039	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.
	1040
	1041	[[image:image-20220515075440-2.png\|\|height="338" width="272"]][[image:image-20220515075625-3.png\|\|height="193" width="257"]]
	1042
55.4	1043	== 5.3 Battery Life Analyze ==
11.1	1044
73.2	1045	(((
11.1	1046	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:
	1047	https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
73.2	1048	)))
11.1	1049
55.4	1050	= 6. Order Info =
11.1	1051
73.2	1052	(((
76.8	1053	Part Number: (% style="color:#4f81bd" %) LHT65N-XX-YY
73.2	1054	)))
2.1	1055
73.2	1056	(((
	1057	(% style="color:#4f81bd" %)XX (%%): The default frequency band
	1058	)))
2.1	1059
73.2	1060	* (((
	1061	(% style="color:#4f81bd" %) AS923(%%): LoRaWAN AS923 band
	1062	)))
	1063	* (((
	1064	(% style="color:#4f81bd" %) AU915(%%): LoRaWAN AU915 band
	1065	)))
	1066	* (((
	1067	(% style="color:#4f81bd" %) EU433(%%): LoRaWAN EU433 band
	1068	)))
	1069	* (((
	1070	(% style="color:#4f81bd" %) EU868(%%): LoRaWAN EU868 band
	1071	)))
	1072	* (((
	1073	(% style="color:#4f81bd" %) KR920(%%): LoRaWAN KR920 band
	1074	)))
	1075	* (((
	1076	(% style="color:#4f81bd" %) US915(%%): LoRaWAN US915 band
	1077	)))
	1078	* (((
	1079	(% style="color:#4f81bd" %) IN865(%%): LoRaWAN IN865 band
	1080	)))
	1081	* (((
	1082	(% style="color:#4f81bd" %) CN470(%%): LoRaWAN CN470 band
	1083	)))
4.1	1084
73.2	1085	(((
	1086	(% style="color:#4f81bd" %)YY(%%): Sensor Accessories
	1087	)))
14.1	1088
73.2	1089	* (((
	1090	(% style="color:#4f81bd" %)E3(%%): External Temperature Probe
	1091	)))
14.1	1092
55.4	1093	= 7. Packing Info =
4.1	1094
73.2	1095	(((
4.1	1096	Package Includes:
73.2	1097	)))
4.1	1098
73.2	1099	* (((
	1100	LHT65N Temperature & Humidity Sensor x 1
	1101	)))
	1102	* (((
	1103	Program cable x 1
	1104	)))
	1105	* (((
	1106	Optional external sensor
	1107	)))
4.1	1108
73.2	1109	(((
4.1	1110	Dimension and weight:
73.2	1111	)))
4.1	1112
73.2	1113	* (((
	1114	Device Size: 13.5 x 7 x 3 cm
	1115	)))
	1116	* (((
	1117	Device Weight: 105g
	1118	)))
	1119	* (((
	1120	Package Size / pcs : 14.5 x 8 x 5 cm
	1121	)))
	1122	* (((
	1123	Weight / pcs : 170g
	1124	)))
4.1	1125
55.4	1126	= 8. FCC Warning =
7.1	1127
73.2	1128	(((
7.1	1129	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
73.2	1130	)))
7.1	1131
73.2	1132	(((
55.4	1133	(1) This device may not cause harmful interference；
73.2	1134	)))
7.1	1135
73.2	1136	(((
55.4	1137	(2) this device must accept any interference received, including interference that may cause undesired operation.
73.2	1138	)))

Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

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