NETVOX Wireless Sensor R718A is capable to measure temperature and humidity at low temperature environment.

R718A can be used in domestic and commercial refrigerators to store and transport food, medicines, flowers and other perishable goods, on the walls or in logistics refrigerators. Suitable as a data logger.

Principle of Operation

NETVOX Wireless Temperature Sensor outputs the ambient temperature in degrees Celsius. It is programmed to sleep for a user-given time interval (heartbeat) and then wakeup. To stay within the abilities of the processor, the temperature is computed off a data table provided by the manufacturer.

Example Applications

Ambient Temperature Monitoring
Environmental Monitoring
Smart City & Smart Building
HVAC Operation & Testing
Data Center Monitoring
Store and Transport Food, Medicines
Flowers and Other Perishable Goods
On the Walls or in Logistics Refrigerators
And many more...

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	20uA
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:65mmH:32mm Sensor cover size: D: 16mm*L: 34.5mm,
Weight	141g
Operating Temperature	-40℃ ～ 55℃
Environment Humidity Range	<90% RH (No condensation)
Storage Temperature	-40℃ ～ 85℃
Temperature Measurement Range	-40°C － 55°C
Temperature Measurement Accuracy	-±0.3°C @25°C Max
Humidity Measurement Range	0%RH － 100%RH
Humidity Measurement Accuracy	±2%RH @25°C

Datasheet:

R718A.pdf

User manual:

R718A_UG.pdf

Battery Calculator:

Netvox Battery Calculator

Netvox LoRa Command Resolver:

LoRa Command Resolver

R718A - Netvox LoRaWan Temperature And Humidity Sensor For Low Temperature Environment