HARDWARE SPECIFICATIONS AND INFORMATION
8
Reveal™ Wireless Air Temperature Humidity Sensor User Guide
Chapter 3 – Hardware Specifications and Information
Absolute Maximum Ratings
Parameter
Rating
Units
Operating ambient temperature
(indoor version)
-30 to +70
°C
Operating ambient temperature
(outdoor version)
-40 to +70
°C
Storage ambient temperature
-40 to +100
°C
Battery Life
The sensor uses a lithium non-rechargeable battery, capable of an estimated 200,000+ messages.
Note:
Refer to the Sensor Battery Estimator.xlsx spreadsheet on the on the sensor's product page for specific
battery life estimates:
https://www.multitech.com/products/sensors
Battery life depends on the number of transmissions per day. Power required for a message transmission is greater
than the “sleep current” for high power radio technologies (e.g, LoRaWAN).
Different battery types deplete over time with different voltage profiles; a lithium battery maintains high voltage
for the life of the battery with a rapid drop near the end of life, and an alkaline battery has gradual reduction in
voltage over time. Radio Bridge devices are shipped with lithium batteries, which are the recommended
replacement type.
Recommended battery: Panasonic CR123/A
Battery life estimates in the online spreadsheet assume room temperature, meaning temperatures near the
maximum and minimum ratings negatively impact battery life. Battery voltage lowers in cold temperatures, and
internal circuitry needs a minimum voltage to operate properly.
Note:
Battery life will be reduced in cold environments leading to possible device shut down.
The battery voltage is reported by the supervisory messages and a low battery indicator. See the section on
Message Protocol for details.