PS-LB -- LoRaWAN Air Water Pressure Sensor User Manual

The Dragino PS-LB series sensors are **(% style="color:blue" %)LoRaWAN Pressure Sensor**(%%) for Internet of Things solution. PS-LB can measure Air, Water pressure and liquid level and upload the sensor data via wireless to LoRaWAN IoT server.

20

21

The PS-LB series sensors include **(% style="color:blue" %)Thread Installation Type**(%%) and **(% style="color:blue" %)Immersion Type**(%%), it supports different pressure range which can be used for different measurement requirement.

22

23

The LoRa wireless technology used in PS-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

24

25

PS-LB supports BLE configure and wireless OTA update which make user easy to use.

26

27

PS-LB is powered by **(% style="color:blue" %)8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.

28

29

Each PS-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.

30

31

[[image:1675071321348-194.png]]

== 1.2 Features ==

* LoRaWAN 1.0.3 Class A

39

* Ultra-low power consumption

40

* Measure air / gas or water pressure

41

* Different pressure range available

42

* Thread Installation Type or Immersion Type

43

* Monitor Battery Level

44

* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865

45

* Support Bluetooth v5.1 and LoRaWAN remote configure

46

* Support wireless OTA update firmware

47

* Uplink on periodically

48

* Downlink to change configure

49

* 8500mAh Battery for long term use

50

51

52

== 1.3 Specification ==

53

54

55

**(% style="color:#037691" %)Micro Controller:**

* MCU: 48Mhz ARM

* Flash: 256KB

* RAM: 64KB

**(% style="color:#037691" %)Common DC Characteristics:**

62

63

* Supply Voltage: 2.5v ~~ 3.6v

64

* Operating Temperature: -40 ~~ 85°C

65

66

**(% style="color:#037691" %)LoRa Spec:**

67

68

* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz

69

* Max +22 dBm constant RF output vs.

70

* RX sensitivity: down to -139 dBm.

71

* Excellent blocking immunity

72

73

**(% style="color:#037691" %)Current Input Measuring :**

* Range: 0 ~~ 20mA

* Accuracy: 0.02mA

* Resolution: 0.001mA

78

79

**(% style="color:#037691" %)Voltage Input Measuring:**

* Range: 0 ~~ 30v

* Accuracy: 0.02v

* Resolution: 0.001v

**(% style="color:#037691" %)Battery:**

86

87

* Li/SOCI2 un-chargeable battery

88

* Capacity: 8500mAh

89

* Self-Discharge: <1% / Year @ 25°C

90

* Max continuously current: 130mA

91

* Max boost current: 2A, 1 second

92

93

**(% style="color:#037691" %)Power Consumption**

94

95

* Sleep Mode: 5uA @ 3.3v

96

* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

97

98

99

== 1.4 Probe Types ==

100

101

=== 1.4.1 Thread Installation Type ===

102

103

104

[[image:1675071448299-229.png]]

105

106

* Hersman Pressure Transmitter

107

* Measuring Range: -0.1 ~~ 0 ~~ 60MPa, see order info.

108

* Accuracy: 0.2% F.S

109

* Long-Term Stability: 0.2% F.S ±0.05%

110

* Overload 200% F.S

111

* Zero Temperature Drift: 0.03% FS/℃(≤100Kpa), 0.02%FS/℃(＞100Kpa)

112

* FS Temperature Drift: 0.003% FS/℃(≤100Kpa), 0.002%FS/℃(＞100Kpa)

113

* Storage temperature: -30℃~~80℃

114

* Operating temperature: -20℃~~60℃

115

* Connector Type: Various Types, see order info

116

117

118

=== 1.4.2 Immersion Type ===

119

120

121

[[image:1675071521308-426.png]]

122

123

* Immersion Type, Probe IP Level: IP68

124

* Measuring Range: Measure range can be customized, up to 100m.

125

* Accuracy: 0.2% F.S

126

* Long-Term Stability: ±0.2% F.S / Year

127

* Overload 200% F.S

128

* Zero Temperature Drift: ±2% F.S)

129

* FS Temperature Drift: ±2% F.S

130

* Storage temperature: -30℃~~80℃

131

* Operating temperature: -40℃~~85℃

132

* Material: 316 stainless steels

133

134

135

== 1.5 Probe Dimension ==

== 1.6 Application and Installation ==

141

142

=== 1.6.1 Thread Installation Type ===

**Application:**

* Hydraulic Pressure

* Petrochemical Industry

149

* Health and Medical

150

* Food & Beverage Processing

151

* Auto-controlling house

152

* Constant Pressure Water Supply

153

* Liquid Pressure measuring

154

155

Order the suitable thread size and install to measure the air / liquid pressure

156

157

[[image:1675071670469-145.png]]

158

159

160

=== 1.6.2 Immersion Type ===

**Application:**

Liquid & Water Pressure / Level detect.

166

167

[[image:1675071725288-579.png]]

168

169

170

The Immersion Type pressure sensor is shipped with the probe and device separately. When user got the device, below is the wiring to for connect the probe to the device.

171

172

173

[[image:1675071736646-450.png]]

174

175

176

[[image:1675071776102-240.png]]

177

178

179

== 1.7 Sleep mode and working mode ==

180

181

182

**Deep Sleep Mode: **Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.

183

184

**Working Mode:** In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.

185

186

187

== 1.8 Button & LEDs ==

188

189

190

[[image:1675071855856-879.png]]

191

192

193

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

194

|(% style="width:138px" %)**Behavior on ACT**|(% style="width:100px" %)**Function**|**Action**

195

|(% style="width:138px" %)Pressing ACT between 1s < time < 3s|(% style="width:100px" %)Send an uplink|(((

196

If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, **blue led** will blink once.

197

198

Meanwhile, BLE module will be active and user can connect via BLE to configure device.

199

)))

200

|(% style="width:138px" %)Pressing ACT for more than 3s|(% style="width:100px" %)Active Device|(((

201

**Green led** will fast blink 5 times, device will enter **OTA mode** for 3 seconds. And then start to JOIN LoRaWAN network.

202

203

**Green led** will solidly turn on for 5 seconds after joined in network.

204

205

Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.

206

)))

207

|(% style="width:138px" %)Fast press ACT 5 times.|(% style="width:100px" %)Deactivate Device|red led will solid on for 5 seconds. Means PS-LB is in Deep Sleep Mode.

== 1.9 Pin Mapping ==

212

213

214

[[image:1675072568006-274.png]]

215

216

217

== 1.10 BLE connection ==

218

219

220

PS-LB support BLE remote configure.

221

222

223

BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:

224

225

* Press button to send an uplink

226

* Press button to active device.

227

* Device Power on or reset.

228

229

If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

230

231

232

== 1.11 Mechanical ==

[[image:1675143884058-338.png]]

238

239

240

[[image:1675143899218-599.png]]

241

242

243

[[image:1675143909447-639.png]]

244

245

246

= 2. Configure PS-LB to connect to LoRaWAN network =

247

248

== 2.1 How it works ==

249

250

251

The PS-LB is configured as **LoRaWAN OTAA Class A** mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and activate the PS-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==

256

257

258

Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.

259

260

261

[[image:1675144005218-297.png]]

262

263

264

The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.

265

266

267

**Step 1**: Create a device in TTN with the OTAA keys from PS-LB.

268

269

Each PS-LB is shipped with a sticker with the default device EUI as below:

270

271

[[image:image-20230131134744-2.jpeg]]

You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

276

277

278

**Register the device**

279

280

[[image:1675144099263-405.png]]

281

282

283

**Add APP EUI and DEV EUI**

284

285

[[image:1675144117571-832.png]]

286

287

288

**Add APP EUI in the application**

289

290

291

[[image:1675144143021-195.png]]

**Add APP KEY**

[[image:1675144157838-392.png]]

297

298

**Step 2**: Activate on PS-LB

299

300

301

Press the button for 5 seconds to activate the PS-LB.

302

303

**Green led** will fast blink 5 times, device will enter **OTA mode** for 3 seconds. And then start to JOIN LoRaWAN network. **Green led** will solidly turn on for 5 seconds after joined in network.

304

305

After join success, it will start to upload messages to TTN and you can see the messages in the panel.

== 2.3 Uplink Payload ==

310

311

312

Uplink payloads have two types:

313

314

* Distance Value: Use FPORT=2

315

* Other control commands: Use other FPORT fields.

316

317

The application server should parse the correct value based on FPORT settings.

318

319

320

=== 2.3.1 Device Status, FPORT~=5 ===

321

322

323

Include device configure status. Once PS-LB Joined the network, it will uplink this message to the server.

324

325

Users can also use the downlink command(0x26 01) to ask PS-LB to resend this uplink.

326

327

328

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

329

|(% colspan="6" %)**Device Status (FPORT=5)**

330

|(% style="width:103px" %)**Size (bytes)**|(% style="width:72px" %)**1**|**2**|**1**|**1**|**2**

331

332

333

Example parse in TTNv3

334

335

[[image:1675144504430-490.png]]

336

337

338

**Sensor Model**: For PS-LB, this value is 0x16

339

340

**Firmware Version**: 0x0100, Means: v1.0.0 version

**Frequency Band**:

*0x01: EU868

*0x02: US915

*0x03: IN865

*0x04: AU915

*0x05: KZ865

*0x06: RU864

*0x07: AS923

*0x08: AS923-1

*0x09: AS923-2

*0x0a: AS923-3

*0x0b: CN470

*0x0c: EU433

*0x0d: KR920

*0x0e: MA869

**Sub-Band**:

AU915 and US915:value 0x00 ~~ 0x08

376

377

CN470: value 0x0B ~~ 0x0C

378

379

Other Bands: Always 0x00

**Battery Info**:

Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 1.3.2 Sensor value, FPORT~=2 ===

392

393

394

Uplink payload includes in total 9 bytes.

395

396

397

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

398

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

399

**Size(bytes)**

400

)))|(% style="width:48px" %)**2**|(% style="width:58px" %)**2**|**2**|**2**|**1**

401

402

403

[[image:1675144608950-310.png]]

=== 2.3.3 Battery Info ===

408

409

410

Check the battery voltage for PS-LB.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.4 Probe Model ===

418

419

420

PS-LB has different kind of probe, 0~~20mA represent the full scale of the measuring range. So a 15mA output means different meaning for different probe.

For example.

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

426

|(% style="width:111px" %)**Part Number**|(% style="width:158px" %)**Probe Used**|**0~~20mA scale**|**Example: 10mA meaning**

427

|(% style="width:111px" %)PS-LB-I3|(% style="width:158px" %)immersion type with 3 meters cable|0~~3 meters|1.5 meters pure water

428

|(% style="width:111px" %)PS-LB-I5|(% style="width:158px" %)immersion type with 5 meters cable|0~~5 meters|2.5 meters pure water

429

430

The probe model field provides the convenient for server to identical how it should parse the 0~~20mA sensor value and get the correct value.

431

432

433

=== 2.3.5 0~~20mA value (IDC_IN) ===

434

435

436

The output value from Pressure Probe, use together with Probe Model to get the pressure value or water level.

**Example**:

27AE(H) = 10158 (D)/1000 = 10.158mA.

441

442

443

=== 2.3.6 0~~30V value ( pin VDC_IN) ===

444

445

446

Measure the voltage value. The range is 0 to 30V.

**Example**:

138E(H) = 5006(D)/1000= 5.006V

451

452

453

=== 2.3.7 IN1&IN2&INT pin ===

454

455

456

IN1 and IN2 are used as digital input pins.

**Example**:

09 (H) :(0x09&0x08)>>3=1 IN1 pin is high level.

461

462

09 (H) :(0x09&0x04)>>2=0 IN2 pin is low level.

463

464

465

This data field shows if this packet is generated by **Interrupt Pin** or not. [[Click here>>path:#Int_mod]] for the hardware and software set up. Note: The Internet Pin is a separate pin in the screw terminal.

**Example:**

09 (H) : (0x09&0x02)>>1=1 The level of the interrupt pin.

470

471

09 (H) : 0x09&0x01=1 0x00: Normal uplink packet.

472

473

0x01: Interrupt Uplink Packet.

474

475

476

=== 2.3.8 Decode payload in The Things Network ===

477

478

479

While using TTN network, you can add the payload format to decode the payload.

480

481

482

[[image:1675144839454-913.png]]

483

484

485

PS-LB TTN Payload Decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]

486

487

488

== 2.4 Uplink Interval ==

489

490

491

The PS-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval||style="background-color: rgb(255, 255, 255);"]]

492

493

494

== 2.5 Show Data in DataCake IoT Server ==

495

496

497

[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:

498

499

500

**Step 1: **Be sure that your device is programmed and properly connected to the network at this time.

501

502

**Step 2:** To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:

503

504

505

[[image:1675144951092-237.png]]

506

507

508

[[image:1675144960452-126.png]]

509

510

511

**Step 3:** Create an account or log in Datacake.

512

513

**Step 4:** Create PS-LB product.

514

515

[[image:1675145004465-869.png]]

516

517

518

[[image:1675145018212-853.png]]

[[image:1675145029119-717.png]]

524

525

526

**Step 5: **add payload decode

527

528

[[image:1675145051360-659.png]]

529

530

531

[[image:1675145060812-420.png]]

After added, the sensor data arrive TTN, it will also arrive and show in Datacake.

536

537

538

[[image:1675145081239-376.png]]

539

540

541

== 2.6 Frequency Plans ==

542

543

544

The PS-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.

545

546

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]

547

548

549

== 2.7 Firmware Change Log ==

550

551

552

**Firmware download link:**

553

554

[[https:~~/~~/www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0>>url:https://www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0]]

= 3. Configure PS-LB via AT Command or LoRaWAN Downlink =

559

560

561

Use can configure PS-LB via AT Command or LoRaWAN Downlink.

562

563

* AT Command Connection: See [[FAQ>>path:#AT_COMMAND]].

564

* LoRaWAN Downlink instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.

565

566

567

There are two kinds of commands to configure PS-LB, they are:

568

569

* **General Commands**.

570

571

These commands are to configure:

572

573

* General system settings like: uplink interval.

574

* LoRaWAN protocol & radio related command.

575

576

They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:

577

578

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]

579

580

581

* **Commands special design for PS-LB**

582

583

These commands only valid for PS-LB, as below:

584

585

586

== 3.1 Set Transmit Interval Time ==

587

588

589

Feature: Change LoRaWAN End Node Transmit Interval.

590

591

**AT Command: AT+TDC**

592

593

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

594

|**Command Example**|**Function**|**Response**

595

|AT+TDC=?|Show current transmit Interval|(((

30000

OK

the interval is 30000ms = 30s

601

)))

602

|AT+TDC=60000|Set Transmit Interval|(((

603

OK

604

605

Set transmit interval to 60000ms = 60 seconds

606

)))

607

608

**Downlink Command: 0x01**

609

610

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

611

612

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

613

614

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

615

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

616

617

618

== 3.2 Set Interrupt Mode ==

619

620

621

Feature, Set Interrupt mode for GPIO_EXIT.

622

623

**AT Command: AT+INTMOD**

624

625

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

626

|**Command Example**|**Function**|**Response**

627

|AT+INTMOD=?|Show current interrupt mode|(((

0

OK

the mode is 0 = No interruption

633

)))

634

|AT+INTMOD=2|(((

635

Set Transmit Interval

636

637

~1. (Disable Interrupt),

638

639

2. (Trigger by rising and falling edge),

640

641

3. (Trigger by falling edge)

642

643

4. (Trigger by rising edge)

644

)))|OK

645

646

**Downlink Command: 0x06**

647

648

Format: Command Code (0x06) followed by 3 bytes.

649

650

This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

651

652

* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode

653

* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

== 3.3 Set the output time ==

658

659

660

Feature, Control the output 3V3 , 5V or 12V.

661

662

**AT Command: AT+3V3T**

663

664

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

665

|(% style="width:156px" %)**Command Example**|(% style="width:236px" %)**Function**|(% style="width:117px" %)**Response**

666

|(% style="width:156px" %)AT+3V3T=?|(% style="width:236px" %)Show 3V3 open time.|(% style="width:117px" %)(((

0

OK

)))

|(% style="width:156px" %)AT+3V3T=0|(% style="width:236px" %)Normally open 3V3 power supply.|(% style="width:117px" %)(((

OK

default setting

)))

|(% style="width:156px" %)AT+3V3T=1000|(% style="width:236px" %)Close after a delay of 1000 milliseconds.|(% style="width:117px" %)(((

OK

)))

|(% style="width:156px" %)AT+3V3T=65535|(% style="width:236px" %)Normally closed 3V3 power supply.|(% style="width:117px" %)(((

OK

)))

**AT Command: AT+5VT**

689

690

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

691

|(% style="width:158px" %)**Command Example**|(% style="width:232px" %)**Function**|(% style="width:119px" %)**Response**

692

|(% style="width:158px" %)AT+5VT=?|(% style="width:232px" %)Show 5V open time.|(% style="width:119px" %)(((

0

OK

)))

|(% style="width:158px" %)AT+5VT=0|(% style="width:232px" %)Normally closed 5V power supply.|(% style="width:119px" %)(((

OK

default setting

)))

|(% style="width:158px" %)AT+5VT=1000|(% style="width:232px" %)Close after a delay of 1000 milliseconds.|(% style="width:119px" %)(((

OK

)))

|(% style="width:158px" %)AT+5VT=65535|(% style="width:232px" %)Normally open 5V power supply.|(% style="width:119px" %)(((

OK

)))

**AT Command: AT+12VT**

715

716

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

717

|(% style="width:156px" %)**Command Example**|(% style="width:268px" %)**Function**|**Response**

718

|(% style="width:156px" %)AT+12VT=?|(% style="width:268px" %)Show 12V open time.|(((

0

OK

)))

|(% style="width:156px" %)AT+12VT=0|(% style="width:268px" %)Normally closed 12V power supply.|OK

724

|(% style="width:156px" %)AT+12VT=500|(% style="width:268px" %)Close after a delay of 500 milliseconds.|(((

OK

)))

**Downlink Command: 0x07**

732

733

Format: Command Code (0x07) followed by 3 bytes.

734

735

The first byte is which power, the second and third bytes are the time to turn on.

736

737

* Example 1: Downlink Payload: 070101F4 -> AT+3V3T=500

738

* Example 2: Downlink Payload: 0701FFFF -> AT+3V3T=65535

739

* Example 3: Downlink Payload: 070203E8 -> AT+5VT=1000

740

* Example 4: Downlink Payload: 07020000 -> AT+5VT=0

741

* Example 5: Downlink Payload: 070301F4 -> AT+12VT=500

742

* Example 6: Downlink Payload: 07030000 -> AT+12VT=0

== 3.4 Set the Probe Model ==

747

748

749

**AT Command: AT** **+PROBE**

750

751

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

752

|(% style="width:157px" %)**Command Example**|(% style="width:267px" %)**Function**|**Response**

753

|(% style="width:157px" %)AT +PROBE =?|(% style="width:267px" %)Get or Set the probe model.|(((

0

OK

)))

|(% style="width:157px" %)AT +PROBE =0003|(% style="width:267px" %)Set water depth sensor mode, 3m type.|OK

759

|(% style="width:157px" %)AT +PROBE =0101|(% style="width:267px" %)Set pressure transmitters mode, first type.|(((

OK

)))

|(% style="width:157px" %)AT +PROBE =0000|(% style="width:267px" %)Initial state, no settings.|(((

OK

)))

**Downlink Command: 0x08**

771

772

Format: Command Code (0x08) followed by 2 bytes.

773

774

* Example 1: Downlink Payload: 080003 -> AT+PROBE=0003

775

* Example 2: Downlink Payload: 080101 -> AT+PROBE=0101

= 4. Battery & how to replace =

780

781

== 4.1 Battery Type ==

782

783

784

PS-LB is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.

785

786

787

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

788

789

[[image:1675146710956-626.png]]

790

791

792

Minimum Working Voltage for the PS-LB:

PS-LB: 2.45v ~~ 3.6v

== 4.2 Replace Battery ==

798

799

800

Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.

801

802

And make sure the positive and negative pins match.

803

804

805

== 4.3 Power Consumption Analyze ==

806

807

808

Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.

809

810

811

Instruction to use as below:

812

813

814

**Step 1:** Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:

815

816

[[https:~~/~~/www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0>>https://www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0]]

817

818

819

**Step 2:** Open it and choose

* Product Model

* Uplink Interval

* Working Mode

And the Life expectation in difference case will be shown on the right.

826

827

[[image:1675146895108-304.png]]

828

829

830

The battery related documents as below:

831

832

* [[Battery Dimension>>https://www.dropbox.com/s/ox5g9njwjle7aw3/LSN50-Battery-Dimension.pdf?dl=0]],

833

* [[Lithium-Thionyl Chloride Battery datasheet, Tech Spec>>https://www.dropbox.com/sh/d4oyfnp8o94180o/AABQewCNSh5GPeQH86UxRgQQa?dl=0]]

834

* [[Lithium-ion Battery-Capacitor datasheet>>https://www.dropbox.com/s/791gjes2lcbfi1p/SPC_1520_datasheet.jpg?dl=0]], [[Tech Spec>>https://www.dropbox.com/s/4pkepr9qqqvtzf2/SPC1520%20Technical%20Specification20171123.pdf?dl=0]]

835

836

[[image:image-20230131145708-3.png]]

837

838

839

=== 4.3.1 Battery Note ===

840

841

842

The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.

843

844

845

=== 4.3.2 Replace the battery ===

846

847

848

You can change the battery in the PS-LB.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.

849

850

The default battery pack of PS-LB includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)

851

852

853

= 5. Remote Configure device =

854

855

== 5.1 Connect via BLE ==

856

857

858

Please see this instruction for how to configure via BLE: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]

859

860

861

== 5.2 AT Command Set ==

= 6. OTA firmware update =

866

867

868

Please see this link for how to do OTA firmware update: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]

= 7. FAQ =

== 7.1 How to use AT Command to access device? ==

874

875

876

See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]

877

878

879

== 7.2 How to update firmware via UART port? ==

880

881

882

See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]

883

884

885

== 7.3 How to change the LoRa Frequency Bands/Region? ==

886

887

888

You can follow the instructions for [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]].

889

When downloading the images, choose the required image file for download.

= 8. Order Info =

[[image:image-20230131153105-4.png]]

= 9. Packing Info =

**Package Includes**:

902

903

* PS-LB LoRaWAN Pressure Sensor

904

905

**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 10. Support =

* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

918

* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]]

919

920

Wiki source code of PS-LB -- LoRaWAN Air Water Pressure Sensor User Manual