netvox R718CXAB User manual

Wireless Temperature And Humidity And Thermocouple Measurement
Model: R718CXAB
Wireless Thermocouple and
Temperature/Humidity Sensor
R718CXAB
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.

1
Table of Contents
1. Introduction................................................................................................2
2. Appearance.................................................................................................3
3. Features ......................................................................................................3
4. Set up Instruction .......................................................................................4
5. Data Report ................................................................................................5
5.1 Example of ReportDataCmd ..............................................................5
5.2 Example of ConfigureCmd.................................................................7
5.3 Example of GlobalCalibrateCmd .......................................................8
5.4 Set/GetSensorAlarmThresholdCmd...................................................9
5.5 Example for MinTime/MaxTime logic ............................................10
6. Information about Battery Passivation ....................................................11
6.1 To determine whether a battery requires activation .........................11
6.2 How to activate the battery...............................................................11
7. Important Maintenance Instruction..........................................................12
8. Description of Waterproof Grade ............................................................13

2
1. Introduction
R718CKAB: The temperature/humidity sensor and K-type thermocouple can respectively detect the temperature and humidity, and an
object's surface temperature. The temperature measurement range of R718CK is -40 °C to +375°C. R718CK has the
features of good linearity, larger thermal electromotive force, high sensitivity and stability. It should not be used in
sulfuric environments, reducing, oxidizing, and vacuum atmospheres, or weak oxidizing atmosphere.
R718CTAB: The temperature/humidity sensor and T-type thermocouple can respectively detect the temperature and humidity, and an
object's surface temperature. The temperature measuring range of R718CT is -40 °C to +125°C but it works more stably in
the range of -40°C to 0°C.
R718CNAB: The temperature/humidity sensor and N-type thermocouple can respectively detect the temperature and humidity, and an
object's surface temperature. The temperature measuring range of R718CK is -40 °C to +800°C, which is wider than other
types of thermocouples.
LoRa Wireless Technology:
LoRa is a wireless communication technology that adopts techniques such as long-distance communication and low power
consumption. Compared with other communication methods, LoRa spread-spectrum modulation techniques greatly expand the
communication distance. It is used in long-distance and low-data wireless communications like automatic meter reading, building
automation equipment, wireless security systems, and industrial monitoring control system. The features include small size, low
power consumption, long transmission distance, and anti-interference ability.
LoRaWAN：
LoRaWAN built LoRa’s end-to-end standards and techniques, ensuring interoperability between devices and gateways from different
manufacturers.

3
2. Appearance
3. Features
⚫SX1276 wireless communication module
⚫2 ER14505 battery in parallel (AA size 3.6V/for each battery)
⚫IP65 rating
⚫Magnetic base
⚫Thermocouple detection
⚫Temperature/Humidity detection
⚫Compatible with LoRaWANTM Class A device
⚫Frequency hopping spread spectrum
⚫Support third-party platforms: Actility/ThingPark, TTN, MyDevices/Cayenne
⚫Low-power design for longer battery life
Note:
Please refer to http://www.netvox.com.tw/electric/electric_calc.html for battery life calculation and other detailed informatio
R718CKAB
R718CTAB
R718CNAB
Temperature and humidity sensor
Indicator
Function Key
Thermocouple

4
4. Set up Instruction
On/Off
Power on
Insert batteries. (Users may need a screwdriver to open battery cover.)
Turn on
Press and hold the function key for 3 seconds until the green indicator flashes.
Turn off (Reset to factory setting)
Press and hold the function key for 5 seconds until green indicator flashes fast for 20 times.
Power off
Remove Batteries.
Note
1. When user removes and inserts the battery; the device should be off by default.
2. 5 seconds after power on, the device will be in engineering test mode.
3. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor
inductance and other energy storage components.
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
(without factory resetting)
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
Fail to join the network
User is recommended to check the device verification information on the gateway or consult
your platform server provider.
Function Key
Press and hold for 5 seconds
Reset to factory setting/Turn off
The green indicator flashes 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 the setting value or the state changes, the device will send a
data report based on the Min Interval.
Low Voltage Warning
Low Voltage
3.2 V

5
5. Data Report
The device will immediately send a version packet report along with an uplink packet including temperature and battery voltage.
The device sends data based on the default configuration before any configuration is done.
Default:
Max Interval: 0x0384 (900s)
Min Interval: 0x0384 (900s) (Automatically checking the current voltage every Min Interval)
BatteryChange: 0x01 (0.1V)
TemperatureChange:0x01 (1°C)
AirTemperatureChange: 0x01 (1℃)
AirHumidChange: 0x01 (1%)
Note:
1. The interval of the data reports might vary due to the firmware.
2. The interval between two reports must be the minimum time.
3.Please refer to the Netvox LoRaWAN Application Command and http://www.netvox.com.cn:8888/cmddoc for devices’ data
analysis.
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
Cannot be 0.
Report per Min Interval
Report per Max Interval

6
Device
Device
Type
Report
Type
NetvoxPayLoadData
R718CKAB
R718CTAB
R718CNAB
0xC4
0xC5
0xCE
0x01
Battery
(1Byte)
unit:0.1V
Temperature
(Signed2Bytes)
unit:0.1°C
AirTemperature
(Signed2Bytes)
unit:0.01°C
AirHumidity
(2Bytes)
unit:0.01%
ThresholdAlarm(1Byte)
Bit0_LowTemperatureAlarm
Bit1_HighTemperatureAlarm
Bit2_LowAirTemperatureAlarm
Bit3_HighAirTemperatureAlarm
Bit4_LowAirHumidityAlarm
Bit5_HighAirHumidityAlarm
Bit6-7:Reserved
Example of Uplink: 01C40124028A0B0E1A9001
1st byte (01): Version
2nd byte (C4): DeviceType 0xC4－R718CKAB
3rd byte (01): ReportType
4th byte (24): Battery－3.6v , 24 Hex=36 Dec 36*0.1v=3.6v
5th 6th byte (028A): Temperature－65°C, 028A(HEX)=650(DEC),650*0.1°C =65.0°C
7th 8th byte (0B0E): Air Temperature－28.3°C, 0B0E(HEX)=2830(DEC),2830*0.01°C =28.30°C
9th 10th byte (1A90): Air Humidity－68%, 1A90(HEX)=6800(DEC),6800*0.01%=68.00%
11th byte (01): Threshold Alarm－Low Temperature Alarm, Bit 0 =1
Tips
1. Battery Voltage:
The voltage value is bit 0 ~ bit 6, bit 7=0 is normal voltage, and bit 7=1 is low voltage.
Battery=0xA0, binary=1010 0000, if bit 7= 1, it means low voltage.
The actual voltage is 0010 0000 = 0x20 = 32, 32*0.1v =3.2v
2. Version Packet:
When Report Type=0x00 is the version packet, such as 01C4000A0B202005200000, the firmware version is 2020.05.20
3. Data Packet:
When Report Type=0x01 is data packet.
4. Signed Value:
When the temperature is negative, 2's complement should be calculated.
0000 0001

7
5.2 Example of ConfigureCmd
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)
Description
Device
Cmd
ID
Device
Type
NetvoxPayLoadData
Config
ReportReq
R718CKAB
R718CTAB
R718CNAB
0x01
0xC4
0xC5
0xCE
MinTime
(2bytes)
Unit:s
MaxTime
(2bytes)
Unit:s
Battery
Change
(1byte)
Unit:0.1v
Temperature
Change
(1byte)
Unit:1℃
AirTemperature
Change
(1byte)
Unit:1℃
AirHumid
Change
(1byte)
Unit:1%
Reserved
(1Byte)
Fixed
0x00
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
(1byte)
Unit:1℃
AirTemperature
Change
(1byte)
Unit:1℃
AirHumid
Change
(1byte)
Unit:1%
Reserved
(1Byte)
Fixed
0x00
(1)Configure R718CKAB report parameters:
MinTime = 1min (0x3c), MaxTime = 1min (0x3c), BatteryChange = 0.1v (0x01), TemperatureChange = 5℃ (0x05),
AirTemperatureChange=5℃ (0x05), AirHumidChange=5% (0x05)
Downlink: 01C4003C003C0105050500
Response:
81C4000000000000000000 (Configuration success)
81C4010000000000000000 (Configuration failure)
(2) Read Configuration:
Downlink: 02C4000000000000000000
Response: 82C4003C003C0105050500 (Current configuration)

8
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 - byte
0x01_Temperature Sensor (Thermocouple temperature & air temperature)
0x02_Humidity Sensor
Channel - byte
0x00_ Thermocouple Temperature
0x01_Air Temperature
0x02_ Air Humidity
(1) Calibrate the R718CKAB thermocouple temperature sensor by increasing 10℃
Sensor type:0x01 Channel: 0x00, Multiplier: 0x0001, Divisor: 0x001, DeltValue: 0x0064
Downlink: 0101000001000100640000 // 0064 Hex = 100 Dec, 100*0.1°C=10°C
Response: 8101000000000000000000 // Configuration success
8101000100000000000000 // Configuration failure
※Unit:
Thermocouple temperature: 0.1°C
Air temperature: 0.01°C
Air humidity: 0.01°%

9
(2) Read Configuration:
Downlink: 0201000000000000000000
Response: 8201000001000100640000 // Current configuration
5.4 Set/GetSensorAlarmThresholdCmd
Fport:0x10
The threshold value could be configured by users. (Default setting is disabled)
If the sensor shows 0xFFFFFFFF, the high / low threshold function is disabled.
Cmd
Descriptor
CmdID
(1Byte)
Payload(10Bytes)
SetSensorAlarm
ThresholdReq
0x01
Channel(1Byte)
0x00_Channel1,
0x01_Chanel2,
0x02_Channel3,etc)
SensorType(1Byte)
0x00_Disable ALL Sensor threshold.
0x01_Temperature,
0x02_Humidity,
SensorHigh
Threshold
(4Bytes)
SensorLow
Threshold
(4Bytes)
SetSensorAlarm
ThresholdRsp
0x81
Status
(0x00_success)
Reserved (9Bytes,Fixed 0x00)
GetSensorAlarm
ThresholdReq
0x02
Channel(1Byte,
0x00_Channel1,
0x01_Chanel2,
0x02_Channel3,etc)
SensorType
(1Byte,Same as the
SetSensorAlarmThresholdReq’s
SensorType)
Reserved
(8Bytes,Fixed 0x00)
GetSensorAlarm
ThresholdRsp
0x82
Channel(1Byte)
0x00_Channel1,
0x01_Chanel2,
0x02_Channel3,etc)
SensorType(1Byte)
0x00_Disable ALL Sensor threshold.
0x01_Temperature,
0x02_Humidity,
SensorHigh
Threshold
(4Bytes)
SensorLow
Threshold
(4Bytes)
Channel - 1byte
0x00_ Thermocouple Temperature
0x01_Air Temperature
0x02_ Air Humidity
(1)Set the high threshold to 40.5°C and the low threshold to 10.5°C.
Downlink: 0100010000019500000069 // 195Hex=405Dec,405*0.1°C=40.5°C; 69Hex=105Dec,105*0.1°C=10.5°C.
Device returns: 8100000000000000000000 // Configuration success
※ Unit:
Thermocouple temperature: 0.1°C
Air temperature: 0.01°C
Air humidity: 0.01°%

10
(2)GetSensorAlarmThresholdReq
Downlink: 0200010000000000000000
Device returns: 8200010000019500000069
(3)Disable all sensor thresholds. (Configure the Sensor Type to 0)
Downlink: 0100000000000000000000
Device returns: 8100000000000000000000
5.5 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
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.

11
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.
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. 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:
6.1 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.
6.2 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.

12
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.
7. 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.

13
8. Description of Waterproof Grade
1: According to Enclosure Protection Class
This standard is equivalent to IEC 60529:2001 Degrees of Protection Provided by Enclosures (IP Code) (English version)
2: The test method of IP65 waterproof grade is: spray the device in all directions under 12.5L/min water flow for 3min, and the internal
electronic function is normal.
The test method of IP67 waterproof grade is: the device is immersed in 1m deep water for 30min, and the internal electronic function is
normal.
IP65, dust-proof and to prevent damage caused by water from nozzles in all directions from invading electrical appliances. It can be
used in general indoor environment and sheltered outdoor environment. It is not suitable for use in environments with high water pressure,
high temperature and high humidity, such as long time direct sunlight outdoors and possible direct exposure to rainstorm. If it is really
necessary to install in harsh environments, it is recommended to add sunscreen and rainproof shields when installing.
Case I (face down with LED and buttons) Case II (installed under the rain shield)