Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

Version 71.1 by Xiaoling on 2022/05/23 15:22

version	line-number	content
55.2	1	(% style="text-align:center" %)
56.2	2	[[image:image-20220523115324-1.jpeg\|\|height="500" width="500"]]
55.2	3
2.1	4
56.2	5	LHT65N LoRaWAN Temperature & Humidity Sensor Manual
	6
	7
	8
	9	Table of Contents：
	10
55.2	11	{{toc/}}
2.1	12
55.4	13
	14
52.2	15	= 1.Introduction =
	16
55.2	17	== 1.1 What is LHT65N Temperature & Humidity Sensor ==
52.2	18
56.3	19	(((
56.2	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(%%).
56.3	21	)))
2.1	22
56.3	23	(((
2.1	24	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	25	)))
2.1	26
56.3	27	(((
6.1	28	LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
56.3	29	)))
2.1	30
56.3	31	(((
2.1	32	LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
56.3	33	)))
2.1	34
56.3	35	(((
56.2	36	LHT65N supports (% style="color:#4f81bd" %)Datalog Feature(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
56.3	37	)))
2.1	38
56.3	39	(((
6.1	40	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
56.3	41	)))
2.1	42
55.2	43	== 1.2 Features ==
2.1	44
	45	* Wall mountable
	46	* LoRaWAN v1.0.3 Class A protocol
	47	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
	48	* AT Commands to change parameters
	49	* Remote configure parameters via LoRaWAN Downlink
15.1	50	* Firmware upgradeable via program port
6.1	51	* Built-in 2400mAh battery for up to 10 years of use.
2.1	52	* Built-in Temperature & Humidity sensor
	53	* Optional External Sensors
6.1	54	* Tri-color LED to indicate working status
2.1	55	* Datalog feature
	56
55.2	57	== 1.3 Specification ==
2.1	58
56.3	59	(((
2.1	60	Built-in Temperature Sensor:
56.3	61	)))
2.1	62
56.3	63	* (((
	64	Resolution: 0.01 °C
	65	)))
	66	* (((
	67	Accuracy Tolerance : Typ ±0.3 °C
	68	)))
	69	* (((
	70	Long Term Drift: < 0.02 °C/yr
	71	)))
	72	* (((
	73	Operating Range: -40 ~~ 85 °C
	74	)))
2.1	75
56.3	76	(((
2.1	77	Built-in Humidity Sensor:
56.3	78	)))
2.1	79
56.3	80	* (((
	81	Resolution: 0.04 %RH
	82	)))
	83	* (((
	84	Accuracy Tolerance : Typ ±3 %RH
	85	)))
	86	* (((
	87	Long Term Drift: < 0.02 °C/yr
	88	)))
	89	* (((
	90	Operating Range: 0 ~~ 96 %RH
	91	)))
2.1	92
56.3	93	(((
6.1	94	External Temperature Sensor:
56.3	95	)))
2.1	96
56.3	97	* (((
	98	Resolution: 0.0625 °C
	99	)))
	100	* (((
	101	±0.5°C accuracy from -10°C to +85°C
	102	)))
	103	* (((
	104	±2°C accuracy from -55°C to +125°C
	105	)))
	106	* (((
	107	Operating Range: -55 °C ~~ 125 °C
	108	)))
2.1	109
55.2	110	= 2. Connect LHT65N to IoT Server =
18.1	111
55.2	112	== 2.1 How does LHT65N work? ==
18.1	113
56.4	114	(((
18.1	115	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	116	)))
18.1	117
56.4	118	(((
18.1	119	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	120	)))
18.1	121
55.2	122	== 2.2 How to Activate LHT65N? ==
18.1	123
	124	The LHT65N has two working modes:
	125
	126	* Deep Sleep Mode: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
19.1	127	* 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	128
56.5	129	(((
18.1	130	The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
56.5	131	)))
18.1	132
	133	[[image:image-20220515123819-1.png\|\|height="379" width="317"]]
	134
57.4	135	(% border="1" style="background-color:#ffffcc; color:green; width:739px" %)
	136	\|Behavior on ACT\|Function\|(% style="width:424px" %)Action
	137	\|Pressing ACT between 1s < time < 3s\|Test uplink status\|(% style="width:424px" %)If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
	138	\|Pressing ACT for more than 3s\|Active Device\|(% style="width:424px" %)green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
	139	\|Fast press ACT 5 times\|Deactivate Device\|(% style="width:424px" %)red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
18.1	140
55.2	141	== 2.3 Example to join LoRaWAN network ==
32.1	142
	143	(% class="wikigeneratedid" %)
	144	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.
	145
	146	(% class="wikigeneratedid" %)
	147	[[image:image-20220522232442-1.png\|\|height="387" width="648"]]
	148
	149	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:
	150
	151
55.3	152	=== 2.3.1 Step 1: Create Device n TTN ===
32.1	153
	154	Create a device in TTN V3 with the OTAA keys from LHT65N.
	155
	156	Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
	157
	158	[[image:image-20220522232812-2.png\|\|height="219" width="279"]]
	159
	160	User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
	161
	162	Add APP EUI in the application.
	163
	164	[[image:image-20220522232916-3.png]]
	165
	166	[[image:image-20220522232932-4.png]]
	167
	168	[[image:image-20220522232954-5.png]]
	169
	170	Note: LHT65N use same payload as LHT65.
	171
	172	[[image:image-20220522233026-6.png]]
	173
	174
	175	Input APP EUI, APP KEY and DEV EUI:
	176
	177	[[image:image-20220522233118-7.png]]
	178
	179
55.2	180	=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
32.1	181
	182	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.
	183
57.3	184	[[image:image-20220522233300-8.png\|\|height="219" width="722"]]
32.1	185
	186
55.3	187	== 2.4 Uplink Payload ==
35.1	188
57.2	189	The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)every 20 minutes(%%) send one uplink by default.
35.1	190
57.2	191	After each uplink, the (% style="color:blue" %)BLUE LED(%%) will blink once.
35.1	192
	193
57.8	194	(% border="1" style="background-color:#ffffcc; color:green; width:428px" %)
57.10	195	\|(% style="width:106px" %)(((
	196	Size(bytes)
	197	)))\|(% style="width:46px" %)(((
	198	2
	199	)))\|(% style="width:104px" %)(((
	200	2
	201	)))\|(% style="width:80px" %)(((
	202	2
	203	)))\|(% style="width:51px" %)(((
	204	1
	205	)))\|(% style="width:35px" %)(((
	206	4
	207	)))
	208	\|(% style="width:106px" %)(((
	209	Value
	210	)))\|(% style="width:46px" %)(((
	211	[[BAT>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.2BAT-BatteryInfo]]
	212	)))\|(% style="width:104px" %)(((
	213	(((
57.8	214	[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
57.10	215	)))
35.1	216
57.10	217	(((
57.8	218	[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
57.10	219	)))
57.8	220	)))\|(% style="width:80px" %)(((
57.10	221	(((
57.8	222	[[Built-in>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
57.10	223	)))
57.8	224
57.10	225	(((
57.8	226	[[Humidity>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
57.10	227	)))
	228	)))\|(% style="width:51px" %)(((
	229	[[Ext>>path:#Extension_Sensor]] #
	230	)))\|(% style="width:35px" %)(((
	231	[[Ext value>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.6Extvalue]]
	232	)))
57.8	233
35.1	234	* The First 6 bytes: has fix meanings for every LHT65N.
	235	* The 7th byte (EXT #): defines the external sensor model.
	236	* 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.)
	237
55.4	238	=== 2.4.1 Decoder in TTN V3 ===
35.1	239
	240	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.
	241
	242	Below is the position to put the decoder and LHT65N decoder can be download from here:
	243
42.1	244	[[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0 >>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
35.1	245
57.4	246	[[image:image-20220522234118-10.png\|\|height="353" width="729"]]
35.1	247
55.4	248	=== 2.4.2 BAT-Battery Info ===
42.1	249
	250	These two bytes of BAT include the battery state and the actually voltage
	251
57.8	252	(% border="1" style="background-color:#ffffcc; color:green; width:502px" %)
57.9	253	\|(% style="width:75px" %)(((
	254	Bit(bit)
	255	)))\|(% style="width:259px" %)(((
	256	[15:14]
	257	)))\|(% style="width:164px" %)(((
	258	[13:0]
	259	)))
	260	\|(% style="width:75px" %)(((
	261	Value
	262	)))\|(% style="width:259px" %)(((
	263	(((
42.1	264	BAT Status
57.9	265	)))
42.1	266
57.9	267	(((
42.1	268	00(b): Ultra Low ( BAT <= 2.50v)
57.9	269	)))
42.1	270
57.9	271	(((
42.1	272	01(b): Low (2.50v <=BAT <= 2.55v)
57.9	273	)))
42.1	274
57.9	275	(((
42.1	276	10(b): OK (2.55v <= BAT <=2.65v)
57.9	277	)))
42.1	278
57.9	279	(((
42.1	280	11(b): Good (BAT >= 2.65v)
57.9	281	)))
	282	)))\|(% style="width:164px" %)(((
	283	Actually BAT voltage
	284	)))
42.1	285
57.5	286	[[image:image-20220522235639-1.png\|\|height="139" width="727"]]
42.1	287
	288	Check the battery voltage for LHT65N.
	289
	290	* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
	291	* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
	292
55.4	293	=== 2.4.3 Built-in Temperature ===
42.1	294
57.5	295	[[image:image-20220522235639-2.png\|\|height="138" width="722"]]
42.1	296
	297	* Temperature: 0x0ABB/100=27.47℃
	298
	299	[[image:image-20220522235639-3.png]]
	300
	301	* Temperature: (0xF5C6-65536)/100=-26.18℃
	302
55.4	303	=== 2.4.4 Built-in Humidity ===
42.1	304
57.5	305	[[image:image-20220522235639-4.png\|\|height="138" width="722"]]
42.1	306
	307	* Humidity: 0x025C/10=60.4%
	308
55.4	309	=== 2.4.5 Ext # ===
42.1	310
	311	Bytes for External Sensor:
	312
57.5	313	(% border="1" style="background-color:#ffffcc; color:green; width:473px" %)
	314	\|(% style="width:139px" %)EXT # Value\|(% style="width:331px" %)External Sensor Type
	315	\|(% style="width:139px" %)0x01\|(% style="width:331px" %)Sensor E3, Temperature Sensor
	316	\|(% style="width:139px" %)0x09\|(% style="width:331px" %)Sensor E3, Temperature Sensor, Datalog Mod
42.1	317
55.4	318	=== 2.4.6 Ext value ===
42.1	319
55.4	320	==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
42.1	321
	322	[[image:image-20220522235639-5.png]]
	323
	324	* DS18B20 temp=0x0ADD/100=27.81℃
	325
	326	The last 2 bytes of data are meaningless
	327
	328	[[image:image-20220522235639-6.png]]
	329
	330	* External temperature= (0xF54F-65536)/100=-27.37℃
	331
57.5	332	(((
42.1	333	The last 2 bytes of data are meaningless
57.5	334	)))
42.1	335
57.5	336	(((
42.1	337	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	338	)))
42.1	339
	340
55.4	341	==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
42.1	342
	343	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:
	344
57.11	345	(% border="1" style="background-color:#ffffcc; color:green; width:541px" %)
	346	\|(% style="width:96px" %)Size(bytes)\|(% style="width:71px" %)2\|(% style="width:69px" %)2\|(% style="width:88px" %)2\|(% style="width:69px" %)1\|(% style="width:85px" %)4
57.7	347	\|(% style="width:96px" %)Value\|(% style="width:71px" %)[[External temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H4.2SetExternalSensorMode]]\|(% style="width:69px" %)(((
57.5	348	[[Built-In>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
42.1	349
57.5	350	[[Temperature>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.3Built-inTemperature]]
57.7	351	)))\|(% style="width:88px" %)(((
57.5	352	BAT Status &
42.1	353
57.5	354	[[Built-in>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
42.1	355
57.5	356	[[Humidity>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/#H2.4.4Built-inHumidity]]
57.11	357	)))\|(% style="width:69px" %)Status & Ext\|(% style="width:85px" %)(((
	358	[[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	359	)))
	360
57.6	361	* Battery status & (% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)Built-in Humidity(%%)
42.1	362
57.11	363	(% border="1" style="background-color:#ffffcc; color:green; width:469px" %)
	364	\|(% style="width:65px" %)Bit(bit)\|(% style="width:267px" %)[15:14]\|(% style="width:134px" %)[11:0]
	365	\|(% style="width:65px" %)Value\|(% style="width:267px" %)(((
42.1	366	BAT Status
	367
	368	00(b): Ultra Low ( BAT <= 2.50v)
	369
	370	01(b): Low (2.50v <=BAT <= 2.55v)
	371
	372	10(b): OK (2.55v <= BAT <=2.65v)
	373
	374	11(b): Good (BAT >= 2.65v)
57.11	375	)))\|(% style="width:134px" %)(((
57.5	376	[[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	377
	378
	379	)))
	380
	381	* Status & Ext Byte
	382
57.11	383	(% border="1" style="background-color:#ffffcc; color:green; width:587px" %)
	384	\|(% style="width:109px" %)Bits\|(% style="width:105px" %)7\|(% style="width:105px" %)6\|(% style="width:82px" %)5\|(% style="width:84px" %)4\|(% style="width:97px" %)[3:0]
	385	\|(% style="width:109px" %)Status & Ext\|(% style="width:105px" %)Not Defined\|(% style="width:105px" %)Poll Message Flag\|(% style="width:82px" %)Sync time OK\|(% style="width:84px" %)Unix Time Request\|(% style="width:97px" %)(((
57.5	386	Ext:0b(1001)
42.1	387	)))
	388
	389	* Poll Message Flag: 1: This message is a poll message reply, 0: means this is a normal uplink.
	390	* 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.
	391	* 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)
	392
55.4	393	== 2.5 Show data on Datacake ==
42.1	394
47.1	395	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:
	396
57.6	397	(((
47.1	398	Step 1: Be sure that your device is programmed and properly connected to the LoRaWAN network.
57.6	399	)))
47.1	400
57.6	401	(((
47.1	402	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	403	)))
47.1	404
57.6	405	(((
47.1	406	Add Datacake:
57.6	407	)))
47.1	408
	409	[[image:image-20220523000825-7.png\|\|height="262" width="583"]]
	410
	411
	412	Select default key as Access Key:
	413
	414	[[image:image-20220523000825-8.png\|\|height="453" width="406"]]
	415
	416	In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
	417
	418	[[image:image-20220523000825-9.png\|\|height="366" width="392"]]
	419
57.12	420	[[image:image-20220523000825-10.png\|\|height="413" width="728"]]
47.1	421
55.4	422	== 2.6 Datalog Feature ==
47.1	423
51.1	424	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.
	425
55.4	426	=== 2.6.1 Unix TimeStamp ===
51.1	427
	428	LHT65N uses Unix TimeStamp format based on
	429
	430	[[image:image-20220523001219-11.png\|\|height="97" width="627"]]
	431
	432
57.6	433	(((
51.1	434	User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
57.6	435	)))
51.1	436
57.6	437	(((
51.1	438	Below is the converter example
57.6	439	)))
51.1	440
57.11	441	[[image:image-20220523001219-12.png\|\|height="298" width="720"]]
51.1	442
	443	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
	444
55.4	445	=== 2.6.2 Set Device Time ===
51.1	446
57.11	447	(((
51.1	448	There are two ways to set device’s time:
57.11	449	)))
51.1	450
57.11	451	(((
51.1	452	~1. Through LoRaWAN MAC Command (Default settings)
57.11	453	)))
51.1	454
57.11	455	(((
51.1	456	User need to set SYNCMOD=1 to enable sync time via MAC command.
57.11	457	)))
51.1	458
57.11	459	(((
51.1	460	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	461	)))
51.1	462
57.11	463	(((
51.1	464	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	465	)))
51.1	466
57.11	467	(((
	468
	469	)))
51.1	470
57.11	471	(((
51.1	472	2. Manually Set Time
57.11	473	)))
51.1	474
57.11	475	(((
51.1	476	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	477	)))
51.1	478
55.4	479	=== 2.6.3 Poll sensor value ===
51.1	480
	481	User can poll sensor value based on timestamps from the server. Below is the downlink command.
	482
	483
57.12	484	(% border="1" style="background-color:#ffffcc; color:green; width:427px" %)
	485	\|(% style="width:61px" %)1byte\|(% style="width:126px" %)4bytes\|(% style="width:120px" %)4bytes\|(% style="width:115px" %)1byte
	486	\|(% style="width:61px" %)31\|(% style="width:126px" %)Timestamp start\|(% style="width:120px" %)Timestamp end\|(% style="width:115px" %)Uplink Interval
51.1	487
57.12	488	(((
51.1	489	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	490	)))
51.1	491
57.12	492	(((
	493	For example, downlink command 31 5FC5F350 5FC6 0160 05
	494	)))
51.1	495
57.12	496	(((
51.1	497	Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data
57.12	498	)))
51.1	499
57.12	500	(((
51.1	501	Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
57.12	502	)))
51.1	503
	504
55.4	505	=== 2.6.4 Datalog Uplink payload ===
51.1	506
	507	The Datalog poll reply uplink will use below payload format.
	508
57.13	509	(((
58.2	510	Retrieval data payload
57.13	511	)))
51.1	512
58.6	513	(% border="1" style="background-color:#ffffcc; color:green; width:545px" %)
	514	\|(% style="width:93px" %)(((
	515	Size(bytes)
	516	)))\|(% style="width:71px" %)(((
	517	2
	518	)))\|(% style="width:102px" %)(((
	519	2
	520	)))\|(% style="width:86px" %)(((
	521	2
	522	)))\|(% style="width:90px" %)(((
	523	1
	524	)))\|(% style="width:85px" %)(((
	525	4
	526	)))
	527	\|(% style="width:93px" %)(((
	528	Value
	529	)))\|(% style="width:71px" %)(((
	530	[[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]]
	531	)))\|(% style="width:102px" %)(((
	532	(((
	533	[[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]]
	534	)))
	535
	536	(((
	537	[[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]]
	538	)))
	539	)))\|(% style="width:86px" %)(((
	540	(((
	541	[[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]]
	542	)))
	543
	544	(((
	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	)))
	547	)))\|(% style="width:90px" %)(((
	548	[[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]]
	549	)))\|(% style="width:85px" %)(((
	550	(((
57.13	551	[[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	552	)))
51.1	553
58.6	554	(((
51.1	555
	556	)))
58.6	557	)))
51.1	558
58.2	559	Poll message flag & Ext
51.1	560
58.4	561	(% border="1" style="background-color:#ffffcc; color:green; width:540px" %)
	562	\|(% style="width:81px" %)Bits\|(% style="width:100px" %)7\|(% style="width:105px" %)6\|(% style="width:84px" %)5\|(% style="width:85px" %)4\|(% style="width:79px" %)[3:0]
	563	\|(% style="width:81px" %)Status & Ext\|(% style="width:100px" %)Not Defined\|(% style="width:105px" %)Poll Message Flag\|(% style="width:84px" %)Sync time OK\|(% style="width:85px" %)Unix Time Request\|(% style="width:79px" %)(((
58.8	564	(((
51.1	565	Ext:
58.8	566	)))
51.1	567
58.8	568	(((
51.1	569	0b(1001)
	570	)))
58.8	571	)))
51.1	572
58.2	573	(((
51.1	574	Poll Message Flag: 1: This message is a poll message reply.
58.2	575	)))
51.1	576
58.2	577	* (((
	578	Poll Message Flag is set to 1.
	579	)))
	580	* (((
	581	Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
	582	)))
51.1	583
58.2	584	(((
51.1	585	For example, in US915 band, the max payload for different DR is:
58.2	586	)))
51.1	587
58.2	588	(((
	589	a) DR0: max is 11 bytes so one entry of data
	590	)))
51.1	591
58.2	592	(((
	593	b) DR1: max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
	594	)))
51.1	595
58.2	596	(((
	597	c) DR2: total payload includes 11 entries of data
	598	)))
51.1	599
58.2	600	(((
	601	d) DR3: total payload includes 22 entries of data.
	602	)))
51.1	603
58.2	604	(((
51.1	605	If devise doesn’t have any data in the polling time. Device will uplink 11 bytes of 0
58.2	606	)))
51.1	607
	608
	609	Example:
	610
	611	If LHT65N has below data inside Flash:
	612
58.2	613	[[image:image-20220523144455-1.png\|\|height="335" width="735"]]
	614
58.4	615	If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
51.1	616
	617	Where : Start time: 60065F97 = time 21/1/19 04:27:03
	618
	619	Stop time 60066DA7= time 21/1/19 05:27:03
	620
	621
	622	LHT65N will uplink this payload.
	623
55.4	624	[[image:image-20220523001219-13.png\|\|height="421" width="727"]]
51.1	625
	626	7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
	627
	628	Where the first 11 bytes is for the first entry:
	629
	630	7FFF089801464160065F97
	631
	632	Ext sensor data=0x7FFF/100=327.67
	633
	634	Temp=0x0898/100=22.00
	635
	636	Hum=0x0146/10=32.6
	637
	638	poll message flag & Ext=0x41,means reply data,Ext=1
	639
	640	Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
	641
55.4	642	== 2.7 Alarm Mode ==
51.1	643
	644	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.
	645
58.10	646	(% 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.
51.1	647
58.10	648	AT Commands for Alarm mode:
51.1	649
58.10	650	(% class="box infomessage" %)
	651	(((
51.1	652	AT+WMOD=1: Enable/Disable Alarm Mode. (0:Disable, 1: Enable)
58.10	653	)))
51.1	654
58.10	655	(% class="box infomessage" %)
	656	(((
51.1	657	AT+CITEMP=1: The interval to check the temperature for Alarm. (Unit: minute)
58.10	658	)))
51.1	659
55.4	660	== 2.8 LED Indicator ==
18.1	661
58.10	662	(((
19.1	663	The LHT65N has a triple color LED which for easy shows different stage.
58.10	664	)))
19.1	665
58.10	666	(((
19.1	667	While pressing ACT button, the LED will work as per LED status with ACT button.
58.10	668	)))
19.1	669
58.10	670	(((
19.1	671	In a normal working state:
58.10	672	)))
19.1	673
58.10	674	* (((
	675	For each uplink, the BLUE LED or RED LED will blink once.
	676	)))
	677	* (((
	678	BLUE LED when an external sensor is connected
	679	)))
	680	* (((
	681	RED LED when an external sensor is not connected
	682	)))
	683	* (((
	684	For each success downlink, the PURPLE LED will blink once
	685	)))
19.1	686
23.1	687	----
19.1	688
55.4	689	== 2.9 Installation ==
21.1	690
52.1	691	[[image:image-20220516231650-1.png\|\|height="436" width="428"]]
21.1	692
55.4	693	= 3. Sensors & Accessories =
21.1	694
55.4	695	== 3.1 E3 Temperature Probe ==
21.1	696
14.1	697	[[image:image-20220515080154-4.png\|\|height="182" width="161"]] [[image:image-20220515080330-5.png\|\|height="201" width="195"]]
	698
	699
	700	With Temperature sensor with 2 meters cable long
	701
	702	* Resolution: 0.0625 °C
	703	* ±0.5°C accuracy from -10°C to +85°C
	704	* ±2°C accuracy from -55°C to +125°C
	705	* Operating Range: -40 ~~ 125 °C
	706	* -55°C to 125°C
	707	* Working voltage 2.35v ~~ 5v
	708
55.4	709	= 4. Configure LHT65N via AT Command or LoRaWAN Downlink =
52.1	710
	711	Use can configure LHT65N via AT Command or LoRaWAN Downlink.
	712
	713	* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].
	714	* LoRaWAN Downlink instruction for different platforms:
	715
	716	[[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]]
	717
	718	There are two kinds of commands to configure LHT65N, they are:
	719
58.10	720	(% style="color:#4f81bd" %)* General Commands.
52.1	721
	722	These commands are to configure:
	723
	724	* General system settings like: uplink interval.
	725	* LoRaWAN protocol & radio-related commands.
	726
	727	They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~~). These commands can be found on the wiki:
	728
	729	[[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_Downlink_Command>>url:http://wiki.dragino.com/index.php?title=End_Device_Downlink_Command]]
	730
58.10	731	(% style="color:#4f81bd" %)* Commands special design for LHT65N
52.1	732
	733	These commands are only valid for LHT65N, as below:
	734
55.4	735	== 4.1 Set Transmit Interval Time ==
52.1	736
	737	Feature: Change LoRaWAN End Node Transmit Interval.
	738
	739	AT Command: AT+TDC
	740
66.2	741	[[image:image-20220523150701-2.png]]
52.1	742
	743	Downlink Command: 0x01
	744
	745	Format: Command Code (0x01) followed by 3 bytes time value.
	746
	747	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	748
66.2	749	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	750	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
52.1	751
55.4	752	== 4.2 Set External Sensor Mode ==
52.1	753
	754	Feature: Change External Sensor Mode.
	755
	756	AT Command: AT+EXT
	757
66.2	758	[[image:image-20220523150759-3.png]]
52.1	759
	760	Downlink Command: 0xA2
	761
	762	Total bytes: 2 ~~ 5 bytes
	763
66.2	764	Example:
52.1	765
	766	* 0xA201: Set external sensor type to E1
	767	* 0xA209: Same as AT+EXT=9
	768	* 0xA20702003c,Same as AT+SETCNT=60
	769
55.4	770	== 4.3 Enable/Disable uplink Temperature probe ID ==
52.1	771
	772	Feature: If PID is enabled, device will send the temperature probe ID on:
	773
	774	* First Packet after OTAA Join
	775	* Every 24 hours since the first packet.
	776
	777	PID is default set to disable (0)
	778
	779	AT Command:
	780
66.2	781	[[image:image-20220523150928-4.png]]
52.1	782
	783	Downlink Command:
	784
66.2	785	* 0xA800 ~-~-> AT+PID=0
	786	* 0xA801 ~-~-> AT+PID=1
52.1	787
55.4	788	== 4.4 Set Password ==
52.1	789
	790	Feature: Set device password, max 9 digits
	791
	792	AT Command: AT+PWORD
	793
66.2	794	[[image:image-20220523151052-5.png]]
52.1	795
	796	Downlink Command:
	797
	798	No downlink command for this feature.
	799
55.4	800	== 4.5 Quit AT Command ==
52.1	801
	802	Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
	803
	804	AT Command: AT+DISAT
	805
66.2	806	[[image:image-20220523151132-6.png]]
52.1	807
	808	Downlink Command:
	809
	810	No downlink command for this feature.
	811
55.4	812	== 4.6 Set to sleep mode ==
52.1	813
	814	Feature: Set device to sleep mode
	815
	816	AT Command: AT+SLEEP
	817
66.2	818	[[image:image-20220523151218-7.png]]
52.1	819
	820	Downlink Command:
	821
	822	* There is no downlink command to set to Sleep mode.
	823
55.4	824	== 4.7 Set system time ==
52.1	825
	826	Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
	827
	828	AT Command:
	829
66.2	830	[[image:image-20220523151253-8.png]]
52.1	831
	832	Downlink Command:
	833
	834	0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
	835
55.4	836	== 4.8 Set Time Sync Mode ==
52.1	837
	838	Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
	839
	840	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.
	841
	842	AT Command:
	843
66.2	844	[[image:image-20220523151336-9.png]]
52.1	845
	846	Downlink Command:
	847
	848	0x28 01 ~/~/ Same As AT+SYNCMOD=1
	849
	850	0x28 00 ~/~/ Same As AT+SYNCMOD=0
	851
55.4	852	== 4.9 Set Time Sync Interval ==
52.1	853
	854	Feature: Define System time sync interval. SYNCTDC default value: 10 days.
	855
	856	AT Command:
	857
70.2	858	[[image:image-20220523151411-10.png]]
52.1	859
	860	Downlink Command:
	861
	862	0x29 0A ~/~/ Same as AT+SYNCTDC=0x0A
	863
55.4	864	== 4.10 Print data entries base on page. ==
52.1	865
	866	Feature: Print the sector data from start page to stop page (max is 416 pages).
	867
	868	AT Command: AT+PDTA
	869
70.2	870	[[image:image-20220523151450-11.png]]
52.1	871
	872	Downlink Command:
	873
	874	No downlink commands for feature
	875
55.4	876	== 4.11 Print last few data entries. ==
52.1	877
	878	Feature: Print the last few data entries
	879
	880	AT Command: AT+PLDTA
	881
70.2	882	[[image:image-20220523151524-12.png]]
52.1	883
	884	Downlink Command:
	885
	886	No downlink commands for feature
	887
55.4	888	== 4.12 Clear Flash Record ==
52.1	889
	890	Feature: Clear flash storage for data log feature.
	891
	892	AT Command: AT+CLRDTA
	893
70.2	894	[[image:image-20220523151556-13.png]]
52.1	895
	896	Downlink Command: 0xA3
	897
	898	* Example: 0xA301 ~/~/Same as AT+CLRDTA
	899
55.4	900	= 5. Battery & How to replace =
52.1	901
55.4	902	== 5.1 Battery Type ==
11.1	903
	904	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.
	905
	906	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
14.1	907	[[image:image-20220515075034-1.png\|\|height="208" width="644"]]
11.1	908
	909	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
	910
	911
55.4	912	== 5.2 Replace Battery ==
11.1	913
	914	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.
	915
	916	[[image:image-20220515075440-2.png\|\|height="338" width="272"]][[image:image-20220515075625-3.png\|\|height="193" width="257"]]
	917
55.4	918	== 5.3 Battery Life Analyze ==
11.1	919
	920	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:
	921	https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
	922
55.4	923	= 6. Order Info =
11.1	924
14.1	925	Part Number: (% class="mark" %)LHT65N-XX
2.1	926
	927	XX: The default frequency band
	928
	929	* AS923: LoRaWAN AS923 band
	930	* AU915: LoRaWAN AU915 band
	931	* EU433: LoRaWAN EU433 band
	932	* EU868: LoRaWAN EU868 band
	933	* KR920: LoRaWAN KR920 band
	934	* US915: LoRaWAN US915 band
	935	* IN865: LoRaWAN IN865 band
	936	* CN470: LoRaWAN CN470 band
4.1	937
14.1	938	YY: Sensor Accessories
	939
	940	* E3: External Temperature Probe
	941
55.4	942	= 7. Packing Info =
4.1	943
	944	Package Includes:
	945
	946	* LHT65N Temperature & Humidity Sensor x 1
	947	* Program cable x 1
	948	* Optional external sensor
	949
	950	Dimension and weight:
	951
	952	* Device Size: 13.5 x 7 x 3 cm
	953	* Device Weight: 105g
	954	* Package Size / pcs : 14.5 x 8 x 5 cm
	955	* Weight / pcs : 170g
	956
55.4	957	= 8. FCC Warning =
7.1	958
	959	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
	960
55.4	961	(1) This device may not cause harmful interference；
7.1	962
55.4	963	(2) this device must accept any interference received, including interference that may cause undesired operation.

Wiki source code of LHT65N LoRaWAN Temperature & Humidity Sensor Manual

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