‎How to Replace Entry Sensor Battery | SimpliSafe Help Center

How to Replace Entry Sensor Battery

 Updated 

The Entry Sensor takes a single CR-2032 Lithium 3V battery and has a life expectancy of up to 5 years depending on placement and usage.

To change your Entry Sensor battery, slide the sensor up and off its' bracket. Then replace the lithium battery and slide the sensor back onto its bracket.