LHT65N-E5 LoRaWAN Temperature_Humidity & Illuminance Sensor User Manual

The Dragino (% style="color:blue" %)**LHT65N-E5 Temperature, Humidity & Illuminance sensor**(%%) is a Long Range LoRaWAN Sensor.It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor**(%%) and has an (% style="color:blue" %)**external Illuminance **(%%)** (% style="color:blue" %)sensor(%%).**

31

32

The LHT65N-E5 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.

33

34

LHT65N-E5 has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for more than 10 years*.

35

36

LHT65N-E5 is fully compatible with (% style="color:blue" %)**LoRaWAN v1.0.3 Class A protocol**(%%), it can work with a standard LoRaWAN gateway.

37

38

(% style="color:blue" %)*(%%)** **The actual battery life depends on how often to send data, please see battery analyzer chapter.

39

)))

40

41

(% style="display:none" %) (%%)

== 1.2 Features ==

* 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

50

* Firmware upgradeable via program port

51

* Built-in 2400mAh battery for up to 10 years of use.

52

* Built-in Temperature & Humidity sensor

53

* External Illuminance Sensor

54

* Tri-color LED to indicate working status

55

* Datalog feature to save sensor data when no LoRaWAN network

56

57

(% style="display:none" %)

== 1.3 Specification ==

62

63

64

(% style="color:#037691" %)**Built-in Temperature Sensor:**

65

66

* Resolution: 0.01 °C

67

* Accuracy Tolerance : Typ ±0.3 °C

68

* Long Term Drift: < 0.02 °C/yr

69

* Operating Range: -40 ~~ 85 °C

70

71

(% style="color:#037691" %)**Built-in Humidity Sensor:**

72

73

* Resolution: 0.04 %RH

74

* Accuracy Tolerance : Typ ±3 %RH

75

* Long Term Drift: < 0.02 °C/yr

76

* Operating Range: 0 ~~ 96 %RH

77

78

(% style="color:#037691" %)**External IIIuminace Sensor:**

79

80

* Base on BH1750 Illumination Sensor

81

* Cable Length : 50cm

82

* Resolution: 1 lx

83

* Range: 0-65535 lx

84

* Operating Range: -40 °C ~~ 85 °C

= 2. Connect LHT65N-E5 to IoT Server =

89

90

== 2.1 How does LHT65N-E5 work? ==

(((

LHT65N-E5 is configured as LoRaWAN OTAA Class A sensor by default. Each LHT65N-E5 is shipped with a worldwide unique set of OTAA keys. To use LHT65N-E5 in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N-E5.

)))

(((

If LHT65N-E5 is within the coverage of this LoRaWAN network. LHT65N-E5 can join the LoRaWAN network automatically. After successfully joining, LHT65N-E5 will start to measure environment temperature, humidity & illumination, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.

)))

== 2.2 How to Activate LHT65N-E5? ==

(((

The LHT65N-E5 has two working modes:

)))

* (((

(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N-E5 doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.

111

)))

112

* (((

113

(% style="color:blue" %)**Working Mode**(%%): In this mode, LHT65N-E5 works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N-E5 will be in STOP mode (IDLE mode), in STOP mode, LHT65N-E5 has the same power consumption as Deep Sleep mode.

)))

(((

The LHT65N-E5 is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:

)))

[[image:image-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]

122

123

[[image:image-20220525110604-2.png||_mstalt="427531"]]

124

125

126

== 2.3 Example to join LoRaWAN network ==

127

128

129

(% class="wikigeneratedid" %)

130

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.

131

132

133

(% class="wikigeneratedid" %)

134

[[image:image-20221224101636-1.png||height="435" width="715"]]

(((

Assume the LPS8v2 is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N-E5. Next we need to add the LHT65N-E5 device in TTN V3:

)))

=== 2.3.1 Step 1: Create Device n TTN ===

(((

Create a device in TTN V3 with the OTAA keys from LHT65N-E5.

)))

(((

Each LHT65N-E5 is shipped with a sticker with its device EUI, APP Key and APP EUI as below:

151

)))

152

153

[[image:image-20220617150003-1.jpeg||_mstalt="5426434"]]

154

155

User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:

156

157

Add APP EUI in the application.

158

159

160

[[image:image-20220522232916-3.png||_mstalt="430495"]]

161

162

163

[[image:image-20220522232932-4.png||_mstalt="430157"]]

164

165

166

[[image:image-20220522232954-5.png||_mstalt="431847"]]

(% style="color:red" %)**Note: LHT65N-E5 use same payload decoder as LHT65.**

171

172

173

[[image:image-20220522233026-6.png||_mstalt="429403"]]

174

175

176

Input APP EUI, APP KEY and DEV EUI:

177

178

179

[[image:image-20220522233118-7.png||_mstalt="430430"]]

180

181

182

=== 2.3.2 Step 2: Activate LHT65N-E5 by pressing the ACT button for more than 5 seconds. ===

(((

Use ACT button to activate LHT65N-E5 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

)))

188

189

[[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]

190

191

192

== 2.4 Uplink Payload ( Fport~=2) ==

(((

The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.

)))

(((

After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.

201

)))

202

203

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)

204

|=(% style="width: 60px;" %)(((

205

**Size(bytes)**

206

)))|=(% style="width: 30px;" %)(((

207

**2**

208

)))|=(% style="width: 100px;" %)(((

209

**2**

210

)))|=(% style="width: 100px;" %)(((

211

**2**

212

)))|=(% style="width: 50px;" %)(((

213

**1**

214

)))|=(% style="width: 50px;" %)(((

215

**4**

216

)))

217

|(% style="width:97px" %)(((

218

**Value**

219

)))|(% style="width:39px" %)(((

220

[[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]

221

)))|(% style="width:100px" %)(((

222

(((

223

[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]

224

)))

225

)))|(% style="width:77px" %)(((

226

(((

227

[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]

228

)))

229

)))|(% style="width:47px" %)(((

230

[[Ext>>||anchor="H2.4.5Ext23"]] #

231

)))|(% style="width:51px" %)(((

232

[[Ext value>>||anchor="H2.4.6Extvalue"]]

233

)))

234

235

* The First 6 bytes: has fix meanings for every LHT65N-E5.

236

* The 7th byte (EXT #): defines the external sensor model. It can be 0x05 or 0x09 for LHT65N-E5

237

* The 8^^th^^ ~~ 9^^th^^ byte: Illuminance. Range: 0-65535 lx.

238

* The 10th ~~ 11th byte: Reserve, always 0xFFFF

=== 2.4.1 Decoder in TTN V3 ===

243

244

245

When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N-E5 decoder in TTNv3 for friendly reading.

246

247

Below is the position to put the decoder and LHT65N-E5 decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]

248

249

250

[[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]

251

252

253

=== 2.4.2 BAT-Battery Info ===

254

255

256

These two bytes of BAT include the battery state and the actually voltage

257

258

[[image:image-20220523152839-18.png||_mstalt="457613"]]

259

260

261

[[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]

262

263

264

Check the battery voltage for LHT65N-E5.

265

266

* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good

267

* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV

=== 2.4.3 Built-in Temperature ===

272

273

274

[[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]

275

276

* Temperature: 0x0ABB/100=27.47℃

277

278

[[image:image-20220522235639-3.png||_mstalt="432120"]]

279

280

* Temperature: (0xF5C6-65536)/100=-26.18℃

=== 2.4.4 Built-in Humidity ===

285

286

287

[[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]

288

289

* Humidity: 0x025C/10=60.4%

=== 2.4.5 Ext value ===

294

295

==== 2.4.5.1 Ext~=0x05, Illuminance Sensor ====

296

297

298

[[image:image-20221224161634-2.png||height="138" width="851"]]

299

300

301

* Illumination=0x005E=94 lux

302

303

The last 2 bytes of data are meaningless

304

305

[[image:image-20221224161725-3.png]]

306

307

* When the sensor is not connected or not connected properly, will show "NULL"

308

309

The last 2 bytes of data are meaningless

==== 2.4.5.2 Ext~=0x85, E5 sensor with Unix Timestamp ====

(((

Timestamp mode is designed for LHT65N-E5 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:

)))

(((

)))

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:535px" %)

325

|=(% style="width: 88px;" %)(((

326

**Size(bytes)**

327

)))|=(% style="width: 93px;" %)(((

328

**2**

329

)))|=(% style="width: 94px;" %)(((

330

**2**

331

)))|=(% style="width: 117px;" %)(((

332

**2**

333

)))|=(% style="width: 54px;" %)(((

334

**1**

335

)))|=(% style="width: 79px;" %)(((

336

**4**

337

)))

338

|(% style="width:88px" %)(((

339

**Value**

340

)))|(% style="width:93px" %)(((

341

[[External temperature>>||anchor="H4.2SetExternalSensorMode"]]

342

)))|(% style="width:94px" %)(((

343

[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]

344

)))|(% style="width:117px" %)(((

345

BAT Status &

346

Illumination

347

)))|(% style="width:54px" %)(((

348

Status & Ext

349

)))|(% style="width:79px" %)(((

350

[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]

351

)))

352

353

* **Battery status & Built-in Humidity**

354

355

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)

356

|=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]

357

|(% style="width:67px" %)Value|(% style="width:256px" %)(((

358

BAT Status

359

00(b): Ultra Low ( BAT <= 2.50v)

360

01(b): Low (2.50v <=BAT <= 2.55v)

361

10(b): OK (2.55v <= BAT <=2.65v)

362

11(b): Good (BAT >= 2.65v)

363

)))|(% style="width:132px" %)(((

Illumination

)))

* **Status & Ext Byte**

368

369

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)

* (% style="color:blue" %)**Poll Message Flag**:(%%) 1: This message is a poll message reply, 0: means this is a normal uplink.

374

* (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N-E5 will set this bit to 0 until got the time stamp from the application server.

375

* (% style="color:blue" %)**Unix Time Request**:(%%) 1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N-E5 will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)

== 2.5 Show data on Datacake ==

(((

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:

)))

(((

)))

(((

(% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.

)))

(((

(% style="color:blue" %)**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.

)))

(((

Add Datacake:

)))

[[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]

Select default key as Access Key:

410

411

412

[[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]

413

414

415

In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.

416

417

418

[[image:image-20221224161935-5.png||height="523" width="409"]]

419

420

421

[[image:image-20221224161957-6.png||height="306" width="852"]]

422

423

424

== 2.6 Datalog Feature ==

(((

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-E5 will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N-E5.

)))

=== 2.6.1 Ways to get datalog via LoRaWAN ===

433

434

435

There are two methods:

436

437

(% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.

438

439

440

(% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N-E5 will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N-E5 will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.

441

442

443

(% style="color:red" %)**Note for method 2:**

444

445

* a) LHT65N-E5 will do an ACK check for data records sending to make sure every data arrive server.

446

* b) LHT65N-E5 will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N-E5 won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N-E5 gets a ACK, LHT65N-E5 will consider there is a network connection and resend all NONE-ACK Message.

447

448

Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)

449

450

451

[[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]

452

453

454

=== 2.6.2 Unix TimeStamp ===

455

456

457

LHT65N-E5 uses Unix TimeStamp format based on

458

459

460

[[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]

User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :

465

466

Below is the converter example

467

468

[[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]

469

470

471

So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25

472

473

474

=== 2.6.3 Set Device Time ===

(((

(% style="color:blue" %)**There are two ways to set device's time:**

)))

(((

**1. Through LoRaWAN MAC Command (Default settings)**

)))

(((

User need to set SYNCMOD=1 to enable sync time via MAC command.

)))

(((

Once LHT65N-E5 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N-E5. If LHT65N-E5 fails to get the time from the server, LHT65N-E5 will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).

)))

(((

(% style="color:red" %)**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.**

)))

(((

**2. Manually Set Time**

)))

(((

User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.

)))

=== 2.6.4 Poll sensor value ===

508

509

510

User can poll sensor value based on timestamps from the server. Below is the downlink command.

511

512

[[image:image-20220523152302-15.png||_mstalt="451581"]]

513

514

515

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.

516

517

For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)

518

519

Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data

520

521

Uplink Internal =5s，means LHT65N-E5 will send one packet every 5s. range 5~~255s.

522

523

524

=== 2.6.5 Datalog Uplink payload ===

525

526

527

The Datalog poll reply uplink will use below payload format.

528

529

**Retrieval data payload:**

530

531

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)

532

|=(% style="width: 60px;" %)(((

533

**Size(bytes)**

534

535

|(% style="width:97px" %)**Value**|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]

536

537

**Poll message flag & Ext:**

538

539

[[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]

540

541

(% style="color:blue" %)**No ACK Message**(%%): 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)

542

543

(% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.

544

545

* Poll Message Flag is set to 1.

546

547

* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.

548

549

For example, in US915 band, the max payload for different DR is:

550

551

(% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data

552

553

(% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)

554

555

(% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data

556

557

(% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.

558

559

If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0

**Example:**

If LHT65N-E5 has below data inside Flash:

565

566

[[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]

567

568

569

If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705

570

571

Where : Start time: 60065F97 = time 21/1/19 04:27:03

572

573

Stop time: 60066DA7= time 21/1/19 05:27:03

574

575

576

**LHT65N-E5 will uplink this payload.**

577

578

[[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]

579

580

581

__**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E

582

583

Where the first 11 bytes is for the first entry:

584

585

7FFF089801464160065F97

586

587

Ext sensor data=0x7FFF/100=327.67

588

589

Temp=0x088E/100=22.00

Hum=0x014B/10=32.6

poll message flag & Ext=0x41,means reply data,Ext=1

594

595

Unix time is 0x60066009=1611030423s=21/1/19 04:27:03

== 2.7 Alarm Mode ==

(((

when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.

)))

(((

(% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**

)))

=== 2.7.1 ALARM MODE ===

613

614

615

(% class="box infomessage" %)

616

(((

617

(((

618

**AT+WMOD=1**: Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)

)))

(((

**AT+CITEMP=1**: The interval between checking the alarm temperature. (In minutes)

)))

(((

**AT+ARTEMP**: Gets or sets the alarm range of the internal temperature sensor

)))

(((

(% _mstmutation="1" %)**AT+ARTEMP=？ **(%%): Gets the alarm range of the internal temperature sensor(% style="display:none" %)

)))

(((

**AT+ARTEMP=45,105**: Set the internal temperature sensor alarm range from 45 to 105.

)))

)))

(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**

Total bytes: 8 bytes

**Example:**AA0100010001003C

WMOD=01

CITEMP=0001

TEMPlow=0001

TEMPhigh=003C

== 2.8 LED Indicator ==

654

655

656

The LHT65 has a triple color LED which for easy showing different stage .

657

658

While user press ACT button, the LED will work as per LED status with ACT button.

659

660

In a normal working state:

661

662

* For each uplink, the BLUE LED or RED LED will blink once.

663

BLUE LED when external sensor is connected.

664

* RED LED when external sensor is not connected

665

* For each success downlink, the PURPLE LED will blink once

== 2.9 installation ==

670

671

672

[[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]

673

674

675

= 3. Sensors and Accessories =

676

677

== 3.1 E2 Extension Cable ==

678

679

680

[[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]

681

682

683

**1m long breakout cable for LHT65N-E5. Features:**

* (((

Use for AT Command

)))

* (((

Update firmware for LHT65N-E5

690

)))

691

* (((

692

Exposed All pins from the LHT65N Type-C connector.

)))

[[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]

699

700

701

= 4. Configure LHT65N-E5 via AT command or LoRaWAN downlink =

(((

Use can configure LHT65N-E5 via AT Command or LoRaWAN Downlink.

)))

* (((

AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].

)))

* (((

LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]

)))

(((

There are two kinds of commands to configure LHT65N-E5, they are:

)))

* (((

(% style="color:#4f81bd" %)**General Commands**.

)))

(((

These commands are to configure:

)))

1. (((

General system settings like: uplink interval.

730

)))

731

1. (((

732

LoRaWAN protocol & radio-related commands.

)))

(((

They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]

)))

* (((

(% style="color:#4f81bd" %)**Commands special design for LHT65N-E5**

)))

(((

These commands are only valid for LHT65N-E5, as below:

)))

== 4.1 Set Transmit Interval Time ==

749

750

751

Feature: Change LoRaWAN End Node Transmit Interval.

752

753

754

(% style="color:#4f81bd" %)**AT Command: AT+TDC**

755

756

[[image:image-20220523150701-2.png||_mstalt="427453"]]

757

758

759

(% style="color:#4f81bd" %)**Downlink Command: 0x01**

760

761

Format: Command Code (0x01) followed by 3 bytes time value.

762

763

If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

764

765

* **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

766

767

* **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

== 4.2 Currently only supports E5 ==

772

773

774

Feature: Set device password, max 9 digits

775

776

777

(% style="color:#4f81bd" %)**AT Command: AT+EXT**

778

779

(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)

780

|Command Example|Function|Response

781

|AT+EXT=?|Get or Set external sensor model|(((

5

OK

)))

|AT+EXT=5|(% colspan="2" %)Set external sensor mode to 5

787

788

(% style="color:#4f81bd" %)**Downlink Command:0xA2**

Total bytes: 2 bytes

**Example:**

* 0xA205: Set external sensor type to E5

== 4.3 Set to sleep mode ==

800

801

802

Feature: Set device to sleep mode

803

804

* **AT+Sleep=0** : Normal working mode, device will sleep and use lower power when there is no LoRa message

805

* **AT+Sleep=1** : Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.

806

807

(% style="color:#4f81bd" %)**AT Command: AT+SLEEP**

808

809

[[image:image-20220523151218-7.png||_mstalt="430703"]]

810

811

812

(% style="color:#4f81bd" %)**Downlink Command:**

813

814

* There is no downlink command to set to Sleep mode.

== 4.4 Set system time ==

819

820

821

Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]

822

823

824

(% style="color:#4f81bd" %)**AT Command:**

825

826

[[image:image-20220523151253-8.png||_mstalt="430677"]]

827

828

829

(% style="color:#4f81bd" %)**Downlink Command:**

830

831

0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352

832

833

834

== 4.5 Set Time Sync Mode ==

(((

Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.

)))

(((

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.

)))

(% style="color:#4f81bd" %)**AT Command:**

848

849

[[image:image-20220523151336-9.png||_mstalt="431717"]]

850

851

852

(% style="color:#4f81bd" %)**Downlink Command:**

853

854

0x28 01 ~/~/ Same As AT+SYNCMOD=1

855

0x28 00 ~/~/ Same As AT+SYNCMOD=0

856

857

858

== 4.6 Set Time Sync Interval ==

859

860

861

Feature: Define System time sync interval. SYNCTDC default value: 10 days.

862

863

864

(% style="color:#4f81bd" %)**AT Command:**

865

866

[[image:image-20220523151411-10.png||_mstalt="449696"]]

867

868

869

(% style="color:#4f81bd" %)**Downlink Command:**

870

871

**0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A

872

873

874

== 4.7 Print data entries base on page. ==

875

876

877

Feature: Print the sector data from start page to stop page (max is 416 pages).

878

879

880

(% style="color:#4f81bd" %)**AT Command: AT+PDTA**

881

882

[[image:image-20220523151450-11.png||_mstalt="451035"]]

883

884

885

(% style="color:#4f81bd" %)**Downlink Command:**

886

887

No downlink commands for feature

888

889

890

== 4.8 Print last few data entries. ==

891

892

893

Feature: Print the last few data entries

894

895

896

(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**

897

898

[[image:image-20220523151524-12.png||_mstalt="452101"]]

899

900

901

(% style="color:#4f81bd" %)**Downlink Command:**

902

903

No downlink commands for feature

904

905

906

== 4.9 Clear Flash Record ==

907

908

909

Feature: Clear flash storage for data log feature.

910

911

912

(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**

913

914

[[image:image-20220523151556-13.png||_mstalt="454129"]]

915

916

917

(% style="color:#4f81bd" %)**Downlink Command: 0xA3**

918

919

* Example: 0xA301 ~/~/ Same as AT+CLRDTA

== 4.10 Auto Send None-ACK messages ==

924

925

926

Feature: LHT65N-E5 will wait for ACK for each uplink, If LHT65N-E5 doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N-E5 keeps sending messages in normal periodically. Once LHT65N-E5 gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.

927

928

929

(% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**

930

931

The default factory setting is 0

932

933

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)

934

|=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**

935

|(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK

936

937

(% style="color:#4f81bd" %)**Downlink Command: 0x34**

938

939

* Example: 0x3401 ~/~/ Same as AT+PNACKMD=1

= 5. Battery & How to replace =

944

945

== 5.1 Battery Type ==

(((

LHT65N-E5 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.

)))

(((

The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.

954

955

956

[[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]

957

)))

958

959

The minimum Working Voltage for the LHT65N-E5 is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.

960

961

962

== 5.2 Replace Battery ==

963

964

965

LHT65N-E5 has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery (3.0v). Any brand should be ok.

966

967

[[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]

968

969

970

== 5.3 Battery Life Analyze ==

(((

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:

975

[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]

)))

(((

A full detail test report for LHT65N-E5 on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]

)))

= 6. FAQ =

== 6.1 How to use AT Command? ==

987

988

989

LHT65N-E5 supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.

990

991

992

[[image:image-20220615153355-1.png||_mstalt="430222"]]

[[image:1655802313617-381.png||_mstalt="293917"]]

(((

In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N-E5. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.

1002

)))

1003

1004

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

1005

1006

AT Command List is as below:

1007

1008

AT+<CMD>? : Help on <CMD>

AT+<CMD> : Run <CMD>

AT+<CMD>=<value> : Set the value

1013

1014

AT+<CMD>=? : Get the value

1015

1016

AT+DEBUG: Set more info output

1017

1018

ATZ: Trig a reset of the MCU

1019

1020

AT+FDR: Reset Parameters to Factory Default, Keys Reserve

1021

1022

AT+DEUI: Get or Set the Device EUI

1023

1024

AT+DADDR: Get or Set the Device Address

1025

1026

AT+APPKEY: Get or Set the Application Key

1027

1028

AT+NWKSKEY: Get or Set the Network Session Key

1029

1030

AT+APPSKEY: Get or Set the Application Session Key

1031

1032

AT+APPEUI: Get or Set the Application EUI

1033

1034

AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)

1035

1036

AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)

1037

1038

AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)

1039

1040

AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing

1041

1042

AT+PNM: Get or Set the public network mode. (0: off, 1: on)

1043

1044

AT+RX2FQ: Get or Set the Rx2 window frequency

1045

1046

AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)

1047

1048

AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms

1049

1050

AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms

1051

1052

AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms

1053

1054

AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms

1055

1056

AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)

1057

1058

AT+NWKID: Get or Set the Network ID

1059

1060

AT+FCU: Get or Set the Frame Counter Uplink

1061

1062

AT+FCD: Get or Set the Frame Counter Downlink

1063

1064

AT+CLASS: Get or Set the Device Class

1065

1066

AT+JOIN: Join network

1067

1068

AT+NJS: Get the join status

1069

1070

AT+SENDB: Send hexadecimal data along with the application port

1071

1072

AT+SEND: Send text data along with the application port

1073

1074

AT+RECVB: Print last received data in binary format (with hexadecimal values)

1075

1076

AT+RECV: Print last received data in raw format

1077

1078

AT+VER: Get current image version and Frequency Band

1079

1080

AT+CFM: Get or Set the confirmation mode (0-1)

1081

1082

AT+CFS: Get confirmation status of the last AT+SEND (0-1)

1083

1084

AT+SNR: Get the SNR of the last received packet

1085

1086

AT+RSSI: Get the RSSI of the last received packet

1087

1088

AT+TDC: Get or set the application data transmission interval in ms

1089

1090

AT+PORT: Get or set the application port

1091

1092

AT+DISAT: Disable AT commands

1093

1094

AT+PWORD: Set password, max 9 digits

1095

1096

AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode

1097

1098

AT+CHE: Get or Set eight channels mode,Only for US915,AU915,CN470

1099

1100

AT+PDTA: Print the sector data from start page to stop page

1101

1102

AT+PLDTA: Print the last few sets of data

1103

1104

AT+CLRDTA: Clear the storage, record position back to 1st

1105

1106

AT+SLEEP: Set sleep mode

1107

1108

AT+EXT: Get or Set external sensor model

1109

1110

AT+BAT: Get the current battery voltage in mV

1111

1112

AT+CFG: Print all configurations

1113

1114

AT+WMOD: Get or Set Work Mode

1115

1116

AT+ARTEMP: Get or set the internal Temperature sensor alarm range

1117

1118

AT+CITEMP: Get or set the internal Temperature sensor collection interval in min

1119

1120

AT+SETCNT: Set the count at present

1121

1122

AT+RJTDC: Get or set the ReJoin data transmission interval in min

1123

1124

AT+RPL: Get or set response level

1125

1126

AT+TIMESTAMP: Get or Set UNIX timestamp in second

1127

1128

AT+LEAPSEC: Get or Set Leap Second

1129

1130

AT+SYNCMOD: Get or Set time synchronization method

1131

1132

AT+SYNCTDC: Get or set time synchronization interval in day

1133

1134

AT+PID: Get or set the PID

1135

1136

1137

== 6.2 Where to use AT commands and Downlink commands ==

**AT commands：**

[[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]

1143

1144

1145

**Downlink commands:**

(% style="color:blue" %)**TTN:**

1150

1151

[[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]

(% style="color:blue" %)**Helium：**

1156

1157

[[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]

(% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**

1162

1163

1164

[[image:image-20220615094850-6.png||_mstalt="433082"]]

1165

1166

1167

[[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]

(% style="color:blue" %)**Aws:**

1172

1173

[[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]

1174

1175

1176

== 6.3 How to change the uplink interval？ ==

1177

1178

1179

Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

1184

1185

1186

== 6.4 How to use TTL-USB to connect PC to upgrade firmware? ==

1187

1188

1189

[[image:image-20220615153355-1.png||_mstalt="430222"]]

1190

1191

1192

(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer first.

1193

1194

[[image:image-20220615170542-5.png||_mstalt="430638"]]

(% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)

1199

1200

First connect the four lines；(% style="display:none" %)

1201

1202

[[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]]，(% style="display:none" %)

1203

1204

1205

Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.

1206

1207

[[image:image-20220621170938-2.png||_mstalt="431704"]]

(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.

1212

1213

[[image:image-20220615171334-6.png||_mstalt="431028"]]

1214

1215

1216

Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.

1217

1218

1219

When this interface appears, it indicates that the download has been completed.

1220

1221

[[image:image-20220620160723-8.png||_mstalt="430703"]]

1222

1223

1224

Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

= 7. Order Info =

Part Number: (% style="color:#4f81bd" %)** LHT65N-E5-XX**

1235

1236

(% style="color:#4f81bd" %)**XX **(%%): The default frequency band

1237

1238

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band

1239

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band

1240

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band

1241

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band

1242

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band

1243

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band

1244

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band

1245

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band

= 8. Packing Info =

**Package Includes**:

1253

1254

* LHT65N-E5 Temperature/Humidity/Illuminance Sensor x 1

1255

1256

**Dimension and weight**:

1257

1258

* Device Size: 10 x 10 x 3.5 mm

1259

* Device Weight: 120.5g

= 9. Reference material =

1264

1265

1266

* [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]

= 10. FCC Warning =

This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:

1274

1275

(1) This device may not cause harmful interference；

1276

1277

(2) this device must accept any interference received, including interference that may cause undesired operation.

Wiki source code of LHT65N-E5 LoRaWAN Temperature_Humidity & Illuminance Sensor User Manual

Applications

Navigation