Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

Version 78.1 by Edwin Chen on 2022/05/24 23:37

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

Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

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