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R718A Temperature and Humidity Sensor for Low Temperature Environment

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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.

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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.

•Apply SX1276 wireless communication module
•2 section of ER14505 battery in parallel (AA SIZE 3.6V / section)
•Temperature and humidity detection
•The base is attached with a magnet that can be attached to a ferromagnetic material object
•Protection class IP65
•LoRaWAN™ Class A compatible
•Frequency Hopping Spread Spectrum (FHSS)
•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
•Improved power management for longer battery life

Electric:

Input Power

2 x 3.6V ER14505 AA lithium batteries (3.6V2400mah/section)

Operating Voltage

DC 3.1V~3.65V

Battery Life

 5 years
(Conditions: ambient temperature 25 °C, 15 min heartbeats, txpower = 20dBm, LoRa spreading factor SF = 10)

Standy Current

20uA

Wake up Current

7.11mA(Typical value)

Low Battery Voltage Threshold

3.2V

Battery Measurement Accuracy

±0.1V

Module Wake up Current

0.8mA - 8mA@3.3V

RF Receiving Current (max)

11mA @3.3V

RF Transmitting Current (max)

120mA @3.3V 


Frequency:

TX Power

US915 20dbm;
AS923 16dbm;
AU915 20dbm;
CN470 19.15dbm;
EU868 16dbm;
KR920 14dbm;
IN865 20dbm;

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

10 km (line-of-sight, the actual transmission distance depends on the environment)

Data Transfer Rate

0.3kbps~50kbps

Spread Technique

LoRa/FSK

Available Frequency

US915       AU915       AS923 EU868       KR920       CN470
Configured before shipment


Physical:

Dimension

Main Body: L: 112mm*W: 65mm*H: 28mm
Sensor cover size: D: 16mm*L: 27mm,

Weight

141g

Environment Temperature Range

-20℃ ~ 55℃

Environment Humidity Range

<90% RH  (No condensation)

Storage Temperature

-40℃ ~ 85℃