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
Copyright©Netvox Technology Co., Ltd.
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

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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

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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.

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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

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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

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5. Data Report
Data report configuration and sending period are as following:
5.1 Example of ReportDataCmd
FPort：0x06
Bytes
1
1
1
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.

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Device
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
1
1
Var(Fix =9 Bytes)
CmdID
DeviceType
NetvoxPayLoadData
CmdID–1 byte
DeviceType–1 byte –Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)

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(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%)

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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

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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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3) We do not recommend to set the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up
frequently and the battery will be drained soon.
4) Whenever the device sends a report, no matter resulting from data variation, button pushed or MaxTime interval, another cycle
of MinTime/MaxTime calculation is started.
6. Installation
The waterproof breathable membrane inside the product is not resistant to vapor.
To prevent water vapor from condensing inside the body, please do not use the product in high humidity and steam environment.
1. The Wireless Temperature and Humidity Sensor (R718A) has a
built-in magnet . When installed, it can be attached to the
surface of an object with iron which is convenient and quick.
To make the installation more secure, use screws
(purchased) to secure the unit to a wall or other surface.
Note:
Do not install the device in a metal shielded box or in an
environment with other electrical equipment around it to avoid
affecting the wireless transmission of the device.
The figure shows the scene where the temperature and humidity
sensor (R718A) is applied in the refrigerator.
It can also be applied to the following scenarios:
⚫Restaurant (refrigerator or freezer)
⚫Shopping mall supermarket (freezer)
⚫Engine room
⚫Environmental monitoring
⚫Smart city and intelligent building
⚫Storage and transportation of food and medicine
⚫Flowers and other perishable foods
⚫Wall or logistics refrigerator
When it is necessary to detect temperature or humidity.
2. When the temperature and humidity detected
by R718A is compared with the last reported values, when the
temperature change is exceeded 1°C (default) or the humidity
change is exceeded 1%(default),it will report
current values.
3. Installation height recommendation:1 to 2 m
4. Installation ambient temperature: -40C° to 55°C
5. Installation direction recommendation: The temperature and
humidity sensor is facing down, and the LOGO is facing
towards the person.
Screw hole diameter: Ø4mm

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positive
Battery installation steps
Please replace the battery by a professional
The device must use 2 sections of ER14505 battery (3.6v/section)
Step 1
Unscrew the four corners of the device with a screwdriver, as shown in the red circle below.
Step 2
Put the batteries into the battery bay of the device and note the positive and negative poles of the battery.
*Please do not insert the battery reversely.
Step 3
After inserting the batteries, put the lid back on and tighten the four screws.
negative

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Note:
Please do not disassemble the device unless it is required to replace the batteries.
Do not touch the waterproof gasket, LED indicator light, function keys when replacing the batteries. Please use suitable
screwdriver to tighten the screws (if using an electric screwdriver, it is recommended to set the torque as 4kgf) to ensure the device
is impermeable.
7. Information about Battery Passivation
Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages
including low self-discharge rate and high energy density.
However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode
and thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride layer prevents
rapid self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation may also lead to
voltage delay when the batteries are put into operation, and our devices may not work correctly in this situation.
As a result, please make sure to source batteries from reliable vendors, and it is suggested that if the storage period is more than
one month from the date of battery production, all the batteries should be activated.
If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis.
ER14505 Battery Passivation:
7.1 To determine whether a battery requires activation
Connect a new ER14505 battery to a resistor in parallel, and check the voltage of the circuit.
If the voltage is below 3.3V, it means the battery requires activation.
7.2 How to activate the battery
a. Connect a battery to a resistor in parallel
b. Keep the connection for 5~8 minutes
c. The voltage of the circuit should be ≧3.3, indicating successful activation.
Brand
Load Resistance
Activation Time
Activation Current
NHTONE
165 Ω
5 minutes
20mA
RAMWAY
67 Ω
8 minutes
50mA
EVE
67 Ω
8 minutes
50mA
SAFT
67 Ω
8 minutes
50mA
Note:
If you buy batteries from other than the above four manufacturers, then the battery activation time, activation current, and required
load resistance shall be mainly subject to the announcement of each manufacturer.

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8. Important Maintenance Instruction
Kindly pay attention to the following in order to achieve the best maintenance of the product:
• Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets
wet, please dry it completely.
• Do not use or store the device in dusty or dirty environment. It might damage its detachable parts and electronic components.
• Do not store the device under excessive heat condition. High temperature can shorten the life of electronic devices, destroy
batteries, and deform or melt some plastic parts.
• Do not store the device in places that are too cold. Otherwise, when the temperature rises to normal temperature, moisture will
form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate structures.
• Do not clean the device with strong chemicals, detergents or strong detergents.
• Do not apply the device with paint. Smudges might block in the device and affect the operation.
• Do not throw the battery into the fire, or the battery will explode. Damaged batteries may also explode.
All of the above applies to your device, battery and accessories.
If any device is not working properly, please take it to the nearest authorized service facility for repair.