For: Admins and Managers
Monitor Pro sensor batteries last around 3 years under normal conditions, but extreme cold can significantly shorten battery life. When a battery is running low, the sensor may stop sending readings or send them intermittently.
You can check the battery level for any sensor in the Admin Console. Go to Dashboard > Sensors and check Last Battery in the Sensor Summary. It shows Healthy, Medium or Low, worked out from the sensor's usable range of 3.6V (full) to 2.9V (flat). Replace the battery when it shows Low. Hover over the level to see the exact voltage.
What you need
A replacement 3.6V Lithium battery (EVE ER18505 or equivalent). Standard AA alkaline batteries will not work in these sensors.
A small screwdriver to open the sensor casing.
Replacement batteries are available from the Safe Food Pro NZ Shop or Safe Food Pro AU Shop.
How to replace the battery
Remove the sensor from its location in the fridge or freezer.
Carefully unscrew the sensor casing.
Note the orientation (+/-) of the existing battery before removing it.
Remove the old battery.
Insert the new 3.6V Lithium battery in the correct orientation.
Screw the casing back together securely, ensuring any seals are seated correctly.
Return the sensor to its location.
After replacement, the sensor should appear on the dashboard within 15 minutes with an updated battery level. If it does not appear, try pressing the Power button on the sensor once while standing next to the Hub — if the Hub's RF light flashes blue, the sensor is communicating correctly and the reading will update at the next 15-minute interval.
If the sensor is still offline after replacing the battery
A new battery should resolve most cases of a single sensor going offline. If the sensor still does not appear on the dashboard after 15–30 minutes, the issue is likely signal-related rather than battery-related. See Troubleshooting Temperature Sensor Issues for next steps.