Netvox R718A User manual

Wireless Temperature and Humidity Sensor for Low Temperature Environment

Model: R718A

Wireless Temperature and

Humidity Sensor for

Low Temperature Environment

R718A

User Manual

This document contains proprietary technical information which is the property of NETVOX

Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in

whole or in part, without written permission of NETVOX Technology. The specifications are subject to

change without prior notice

Table of Content

1. Introduction.................................................................................................................................................................... 2

2. Appearance .................................................................................................................................................................... 3

3. Main Features ................................................................................................................................................................ 3

4. Set up Instruction........................................................................................................................................................... 4

5. Data Report.................................................................................................................................................................... 5

5.1 Example of ReportDataCmd .................................................................................................................................. 5

5.2 Example of Report Configuration.......................................................................................................................... 6

5.3 Example of GlobalCalibrateCmd........................................................................................................................... 8

5.4 Example for MinTime/MaxTime logic .................................................................................................................. 9

6. Installation ................................................................................................................................................................... 10

7. Information about Battery Passivation........................................................................................................................ 12

7.1 To determine whether a battery requires activation ............................................................................................. 12

7.2 How to activate the battery .................................................................................................................................. 12

8. Important Maintenance Instruction ............................................................................................................................. 13

1. Introduction

R718A, mainly used to detect the temperature and humidity at low temperature environment such as the freezer air. It collects data

over LoRa network and sends it to devices to be shown, fully compatible with LoRa protocol.

LoRa Wireless Technology:

LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other

communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance.

Widely used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation

equipment, wireless security systems, industrial monitoring. Main features include small size, low power consumption, transmission

distance, anti-interference ability and so on.

LoRaWAN:

LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and

gateways from different manufacturers.

2. Appearance

3. Main Features

⚫Compatible with LoRa protocol.

⚫2 x ER14505 lithium batteries (3.6V / section / AA size)

⚫Capable to detect the ambient temperature and humidity

⚫Simple and easy installation

⚫IP rating: IP65

⚫Compatible with LoRaWANTM Class A

⚫Frequency hopping spread spectrum

⚫Configuration parameters can be configured via a third-party software platform, data can be read and alerts can be set via SMS text

and email (optional)

⚫Applicable to third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne

⚫Improved power management for longer battery life

⚫Battery Life:

⁻Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html

⁻At this website, users can find battery life time for variety models at different configurations.

Indicator

Function Key

Built-in temperature and humidity

sensor

4. Set up Instruction

On/Off

Power on

Insert batteries. (users may need a screwdriver to open)

Turn on

Press and hold the function key for 3 seconds till the green indicator flashes once.

Turn off (Restore to factory setting)

Press and hold the function key for 5 seconds till green indicator flashes for 20 times.

Power off

Remove Batteries.

Note

1. Remove and insert the battery; the device is at off state by default.

2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor

inductance and other energy storage components.

3. At 1st -5th second after power on, the device will be in engineering test mode.

Network Joining

Never joined the network

Turn on the device to search the network to join.

The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Had joined the network

(not at factory setting)

Turn on the device to search the previous network to join.

The green indicator stays on for 5 seconds: success

The green indicator remains off: fail

Function Key

Press and hold for 5 seconds

Restore to factory setting / Turn off

The green indicator flashes for 20 times: success

The green indicator remains off: fail

Press once

The device is in the network: green indicator flashes once and sends a report

The device is not in the network: green indicator remains off

Sleeping Mode

The device is on and in the network

Sleeping period: Min Interval.

When the reportchange exceeds setting value or the state changes: send a data report according

to Min Interval.

Low Voltage Warning

Low Voltage

3.2V

5. Data Report

Data report configuration and sending period are as following:

5.1 Example of ReportDataCmd

FPort：0x06

Bytes

Var(Fix=8 Bytes)

Version

DeviceType

ReportType

NetvoxPayLoadData

Version–1 byte –0x01——the Version of NetvoxLoRaWAN Application Command Version

DeviceType–1 byte –Device Type of Device

The devicetype is listed in Netvox LoRaWAN Application Devicetype doc

ReportType – 1 byte –the presentation of the NetvoxPayLoadData，according the devicetype

NetvoxPayLoadData– Fixed bytes (Fixed =8bytes)

Min Interval

(Unit:second)

Max Interval

(Unit:second)

Reportable Change

Current Change≥

Reportable Change

Current Change＜

Reportable Change

Any number between

1~65535

Any number between

1~65535

Can not be 0.

Report

per Min Interval

Report

per Max Interval

The device will immediately send a version packet report along with an uplink packet including temperature, humidity and

battery voltage.

The device sends data in the default configuration before any configuration is done.

Default setting:

Max Interval: 0x0384 (900s)

Min Interval: 0x0384 (900s)

Battery Change: 0x01 (0.1V)

Temperature Change:0x0064 (1°C)

Humidity Change:0x0064 (1%)

Note:

The device report interval will be programmed based on the default firmware which may vary.

The interval between two reports must be the minimum time.

Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver

http://cmddoc.netvoxcloud.com/cmddoc to resolve uplink data.

Device

Type

Report

Type

NetvoxPayLoadData

R718A

0x0B

0x01

Battery

(1Byte, unit:0.1V)

Temperature

(Signed2Bytes,unit:0.01°C)

Humidity

(2Bytes,unit:0.01%)

Reserved

(3Bytes,fixed 0x00)

Example 1 of Uplink: 010B012406701A9E000000

1st byte (01): Version

2nd byte (0B): DeviceType 0x0B － R718A

3rd byte (01): ReportType

4th byte (24): Battery － 3.6V, 24(Hex) = 36(Dec), 36x0.1v=3.6v

5th 6th byte (0670): Temperature － 16.48 °C , 0670(Hex)=1648(Dec), 1648x0.01=16.48°C

7th 8th byte (1A9E): Humidity － 68.14%, 1A9E(Hex)=6814(Dec), 6814x0.01=68.14%

9th -11th byte (000000): Reserved

Example 2 of Uplink: 010B019FFF391A9E000000

1st byte (01): Version

2nd byte (0B): DeviceType 0x01 － R718A

3rd byte (01): ReportType

4th byte (9F): Battery － 3.1V, 1F(Hex) = 31(Dec), 31x0.1v=3.1v // Low battery

5th 6th byte (FF39): Temperature － -1.99°C

0x10000-0xFF39=0xC7 (Hex) = 199(Dec) , 199x0.01=1.99°C

7th 8th byte (1A9E): Humidity － 68.14%, 1A9E(Hex)=6814(Dec), 6814x0.01=68.14%

9th -11th byte (000000): Reserved

Note:

1. When the temperature is negative, 2's complement should be calculated.

2. When the battery is low voltage, the highest bit of the voltage is 1, and bit0-bit6 represents the voltage value.

5.2 Example of Report Configuration

FPort：0x07

Bytes

Var(Fix =9 Bytes)

CmdID

DeviceType

NetvoxPayLoadData

CmdID–1 byte

DeviceType–1 byte –Device Type of Device

NetvoxPayLoadData– var bytes (Max=9bytes)

(1)Command Configuration:

MinTime = 1min、MaxTime = 1min、BatteryChange = 0.1v、TemperatureChange = 1℃、HumidityChange = 1%

Downlink： 010B003C003C0100640064 003C(Hex) = 60(Dec), 64(Hex) = 100(Dec)

Response：

810B000000000000000000 (Configuration success)

810B010000000000000000 (Configuration failure)

(2)Read Configuration:

Downlink： 020B000000000000000000

Response：

820B003C003C0100640064（Current configuration）

Description

Device

CmdID

Device

Type

NetvoxPayLoadData

Config

ReportReq

R718A

0x01

0x0B

MinTime

(2bytes Unit:s)

MaxTime

(2bytesUnit:s)

Battery

Change

(1byte

Unit:0.1v)

Temperature

Change

(2byte

Unit:0.01℃)

Humidity

Change

(2byte

Unit:0.01%)

Config

ReportRsp

0x81

Status

(0x00_success)

Reserved

(8Bytes,Fixed 0x00)

ReadConfig

ReportReq

0x02

Reserved

(9Bytes,Fixed 0x00)

ReadConfig

ReportRsp

0x82

MinTime

(2bytes Unit:s)

MaxTime

(2bytes

Unit:s)

Battery

Change

(1byte

Unit:0.1v)

Temperature

Change

(2byte

Unit:0.01℃)

Humidity

Change

(2byte

Unit:0.01%)

5.3 Example of GlobalCalibrateCmd

FPort： 0x0E

Description

CmdID

Sensor

Type

PayLoad(Fix =9 Bytes)

SetGlobal

CalibrateReq

0x01

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Multiplier

(2bytes,Unsigned)

Divisor

(2bytes,Unsigned)

DeltValue

(2bytes,Signed)

Reserved

(2Bytes,Fixed

0x00)

SetGlobal

CalibrateRsp

0x81

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Status

(1Byte,0x00_success)

Reserved

(7Bytes,Fixed 0x00)

GetGlobal

CalibrateReq

0x02

Channel

(1Byte,0_Channel1,1_Channel2,etc)

Reserved

(8Bytes,Fixed 0x00)

GetGlobal

CalibrateRsp

0x82

Channel(1Byte)

0_Channel1,

1_Channel2,etc

Multiplier

(2bytes,Unsigned)

Divisor

(2bytes,Unsigned)

DeltValue

(2bytes,Signed)

Reserved

(2Bytes,Fixed

0x00)

ClearGlobal

CalibrateReq

0x03

Reserved

(10Bytes,Fixed 0x00)

ClearGlobal

CalibrateRsp

0x83

Status

(1Byte,0x00_success)

Reserved

(9Bytes,Fixed 0x00)

Sensor type:

0x01_Temperature Sensor 0x02_Humidity Sensor

(1)Assume that the reported original value of temperature is 27.15°C, the calibration reduces by 0.28°C, and the reported value is

26.87°C. (Sensor type=0x01, Channel 1 =0x00, Multiplier =0x0001, Divisor = 0x0001, DeltValue = 0xFFE4)

Downlink: 01010000010001FFE40000 // FFE4 Hex = -28 Dec, -28*0.01°C= -0.28°C

Device return:8101000000000000000000 // Configuration successful

8101000100000000000000 // Configuration failed

(2)Assume that the reported original value of humidity is 49.98%, the calibration increases by 0.52%, and the reported value is 50.5%.

(Sensor type=0x02,Channel 2 =0x01, Multiplier =0x0001，Divisor = 0x0001，DeltValue = 0x0034)

Downlink: 0102010001000100340000 // 34 Hex= 52 Dec, 52*0.01%= 0.52%

Device return:8102010000000000000000 // Configuration successful

8102010100000000000000 // Configuration failed

5.4 Example for MinTime/MaxTime logic

Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V

MaxTime MaxTime

Sleeping(MinTime) Sleeping(MinTime)

Note:

MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value.

Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

MaxTime

Sleeping(MinTime) sleeping sleeping sleeping

0H 15th M 30th M 45th M 1H

Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

MaxTime

sleeping sleeping ...

0H 15th M 30th M 45th M 1H 1H 10th M 1H 25th M 1H 40th M 1H 55th M 2H 10th M

Note:

1) The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect

data.

2) The data collected is compared with the last data reported. If the data variation is greater than the ReportableChange value, the

device reports according to MinTime interval. If the data variation is not greater than the last data reported, the device reports

according to MaxTime interval.

Wakes up and

collects data

3.6V

Does not report

Wakes up and

collects data

3.6V

Does not report

Wakes up and

collects data

3.6V

Does not report

Wakes up and

collects data

REPORTS 3.6V

Wakes up and

collects data

REPORT 3.6V

Wakes up and

collects data

REPORTS 3.6V

Wakes up and collects data

3.5V |3.5-3.6|=0.1

REPORTS 3.5V

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data 3.5V

Does not report

Wakes up and

collects data

3.5V

Does not report

Wakes up and

collects data

REPORTS 3.5V

Wake up and collects data

REPORTS 3.6V

Wakes up and collects data

REPORTS 3.6V

Wakes up and collects data

REPORTS 3.6V

Wakes up and

collects data

3.6V

Does not report

Users push the button,

REPORTS 3.5V.

Recalculate MaxTime.

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