Netvox Wireless 2-Gang Thermocouple Sensor -High Temperature - R718CT2 is used to detect temperature of the object and medium which thermocouple is contacted. It can be connected to two thermocouples for testing. It uses SX1276 wireless communication module.

R718CK2 is connected with type T thermocouple, it supports good temperature accuracy operation. The collected data is displayed in the gateway.

Principle of Operation

The thermocouple is processed by the ADS1118 chip ADC for ADC sample conversion, and the ADS1118 communicates with the module via SPI.

Example Applications

Low to Med Temperature Measurement
Freezer, Fridge System Equipment

Features of NETVOX Sensors

• Wireless range of 10 km *

• LoRaWANTM Class A compatible

• Frequency Hopping Spread Spectrum (FHSS)

• Improved interference immunity

• Improved power management for longer battery life

• Encrypt-RF™ Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)

• Battery Life* :

5 years (Conditions: ambient temperature 25 °C, 20 triggers/day, txpower = 20dBm, LoRa spreading factor SF = 10)

• Over-the-air updates (future)

• Third-Party online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email (optional)

• Available third-party platform: Actility/ThingPark, TTN, MyDevices/Cayenne

• R718X series carry magnets which can be attached to ferromagnetic materials and objects

*Actual range may vary depending on environment.

*Battery life is determined by sensor reporting frequency and other variables

Technical Specifications

Input Power	2 x 3.6V ER14505 AA lithium batteries
Sleeping Mode	36uA
Wake up Mode	6.3mA @ 3.3V
Low Voltage Threshold	3.2V
Tx Current	120mA/3.0V
Rx Current	11mA @3.0V
Battery Life	5 years (Conditions: ambient temperature 25 °C, 15 min heartbeats, txpower = 20dBm, LoRa spreading factor SF = 10)

Frequency

Tx Power	19dBm±1dBm
Rx Sensitivity	-136dBm (LoRa，Spreading Factor=12，Bit Rate=293bps ) -121dBm (FSK,Frequency deviation=5kHz, Bit Rate=1.2kbps)
Antenna Type	Build-in antenna
Communication Range	Build-in antenna
Data Transfer Rate	0.3kbps～50kbps
Spread Technique	LoRa/FSK
Available Frequency	EU863-870，US902-928，AU915-928， KR920-923，AS923，CN470-510 Configured before shipment

Physical

Dimension	L:112mmW:88.19mmH:32mm Thermocouple Wire Length: 1 Meter
Weight	141g
Operating Temperature	-20℃ ～ 55℃
Environment Humidity Range	<90% RH (No condensation)
Storage Temperature	-40℃ ～ 85℃
Temperature Measurement Range	Type T thermocouple: -40~125℃
Temperature Measurement Accuracy	+-0.5℃
Humidity Measurement Range	10%RH － 90%RH
Humidity Measurement Accuracy	±2%RH @25°C

Datasheet:

R718CT2.pdf

User manual:

R718CT2_UG.pdf

Battery Calculator:

Netvox Battery Calculator

Netvox LoRa Command Resolver:

LoRa Command Resolver

R718CT2 - Netvox LoRaWan Wireless 2-Gang Thermocouple Sensor