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HARDWARE SPECIFICATIONS AND INFORMATION
Chapter 3 – Hardware Specifications and Information
Absolute Maximum Ratings
Parameter
Operating ambient temperature (indoor version)
Operating ambient temperature (outdoor version)
Storage ambient temperature
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. Sensors ship with a lithium battery, which is 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 and a low battery indicator are reported by supervisory messages. Refer to the section on
Message Protocol for details.
Replacing the Battery
Replacement battery type is listed in the Battery Life topic. To replace the battery:
1.
Use a pen or similar object to press the button on the opposite side of the case.
8
®
Radio Bridge LoRaWAN
Rating
-30°C to +70°C
-40°C to +70°C
-40°C to +90°C
Wireless Sensor Dry Contact Sensor User Guide
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