netvox R718CT2 User manual

Mode：R718CT2/CK2/CR2
Wireless Thermocouple Interface for T/K/R Type Thermocouple
Wireless Thermocouple Interface for
T/K/R Type Thermocouple
R718CT2/CK2/CR2
User Manual

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Table of Content
1. Introduction................................................................................................................................................................ 2
2. Appearance................................................................................................................................................................. 3
3. Main Features............................................................................................................................................................. 3
4.Set up Instruction.........................................................................................................................................................3
4.1 Power on and Turn on / off...............................................................................................................................3
4.2 Join Into Lora Network.................................................................................................................................... 4
4.3 Function Key.................................................................................................................................................... 4
4.4 Data Report.......................................................................................................................................................4
5. Restore to Factory Setting.......................................................................................................................................... 5
6. Sleeping Mode............................................................................................................................................................5
7. Low Voltage Alarming............................................................................................................................................... 5
8. Installation.................................................................................................................................................................. 5
9. Important Maintenance Instruction............................................................................................................................ 6

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1. Introduction
R718CK2 (nickel-chromium-nickel silicon thermocouple): its use temperature is -40 ~ +375℃, with
good linearity, large thermoelectromotive force, high sensitivity, stability, can not be used directly at
high temperature for sulfur, reducing or reducing It is not recommended for use in weak oxidizing
atmospheres in oxidizing alternating atmospheres and in vacuum.
R718CT2 (copper-copper-nickel thermocouple): its use temperature is -40 ~ +125℃, it is used in the
temperature range of -40~0℃, and the stability is better.
R718CR2 (precious metal thermocouple): Its temperature is 0 ~ +1100℃. The R type thermocouple
has the highest accuracy, the best stability, wide temperature range and long service life in the
thermocouple series. It has good physical and chemical properties, good thermoelectric potential
stability and high oxidation resistance at high temperatures, and is suitable for oxidizing and inert
atmospheres.
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
Fig.1 Appearance
3. Main Features
Compatible with LoRa protocol.
2 x ER14505 AA lithium batteries（3.6V, 2400mah/section）
4.Set up Instruction
4.1 Power on and Turn on / off
(1) Insert two 3.6V power supplies to the battery holder of the device. The R718CK2/T2/R2 device
is not yet powered. Press the device button for 3 seconds. After the release, the green indicator
flashes once to indicate that the device has been powered on and starts to search the network.
(2) After pressing the button for 5 seconds, the green indicator light will continue to flash quickly.
When the button is released, the indicator will flash quickly for 20 times and the device will be
powered off.

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4.2 Join Into Lora Network
To join R718CT2/CK2/CR2 into LoRa network to communicate with LoRa gateway.
The network operation is as following:
After the device is powered on, it starts to actively search for the network. If it searches a network
that can be joined, the green indicator light will stay on for 5 seconds to indicate that the network is
successfully joined. Otherwise, the indicator light does not work;
4.3 Function Key
(1) Press and hold the function key for 3 seconds to turn on the device, and the green LED flashes
once.
(2) Press and hold function key for 5 seconds to reset to factory setting. After restoring to
factory setting successfully, the green indicator will flashes quickly 20 times.
(3) Press function key to turn on the device which is in the network and the green indicator will flash
once and the device will send a data report.
4.4 Data Report
When the device is turned on, it will immediately send a version package and a data report of
temperature/voltage. The transmission frequency of data report is once every hour.
ReportMaxTime：3600s；
ReportMinTime：3600s；
ReportChange: 0.1V;
TempChange：1℃;
Data report configuration and sending period are as following:
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

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5. Restore to Factory Setting
Operation method: press and hold the button for 5 seconds and the green LED flashes for 20 times,
and R718CK2/T2/R2 will be turned off after successful erasure.
6. Sleeping Mode
R718CT2/CK2/CR2 is designed to enter sleeping mode for power-saving in some situations:
(A) While the device is in the network → the sleeping period is one hour. (During this period,
if the reportchange is larger than setting value, it will wake up and send a data report).
(B) When it is not in the network → R718CT2/CK2/CR2 will enter sleeping mode and wake
up every 15 seconds to search a network to join in the first two minutes. After two minutes, it
will wake up every 15 minutes to request to join the network.
If it’s at (B) status, to prevent this unwanted power consumption, we recommend that users
remove the batteries to power off the device.
7. Low Voltage Alarming
The operating voltage threshold is 3.2V. If the voltage is lower than 3.2V, the device will send a
low-power report to the Lora network.
8. Installation
Thermocouples have positive and negative poles, with the + mark on the bare device as the direction,
the second and third holes as a group, the 4th and 5th holes as a group, the 2nd and 4th holes connect
to the positive (red line) of the thermocouple, the third and fifth holes connect to the negative (black
line) of thermocouples. This product comes with a waterproof function. When using it, you can
attach the back side to the iron surface, or use screws to fix both ends to the wall.
Note: To install the battery, use a tool such as a screwdriver to open the battery cover.

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9. Important Maintenance Instruction
Your device is a product of superior design and craftsmanship and should be used with care. The
following suggestions will help you use the warranty service effectively.
•Keep the equipment dry. Rain, moisture, and various liquids or moisture may contain minerals
that can corrode electronic circuits. In case the device is wet, please dry it completely.
•Do not use or store in dusty or dirty areas. This can damage its detachable parts and electronic
components.
•Do not store in excessive heat. High temperatures can shorten the life of electronic devices,
destroy batteries, and deform or melt some plastic parts.
•Do not store in a cold place. 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 wash with strong chemicals, detergents or strong detergents.
•Do not apply with paint. Smudges can block debris in detachable parts and affect normal
operation.
•Do not throw the battery into a fire to prevent the battery from exploding. Damaged batteries
may also explode.
All of the above suggestions apply equally to your device, battery and accessories. If any device is
not working properly.
Please take it to the nearest authorized service facility for repair.