This device comes with 2 types of batteries:
- 2 x CR2 (main batteries)
- 1 x CR2032 (3V backup battery)
The device manual is available here:
https://support.ajax.systems/en/how-to-replace-batteries-in-fireprotect/
Our references with regard to power supply devices are as follows:
https://www.visiotechsecurity.com/es/productos/accesorios/alimentacion/batt-cr2-detail#tab=prod_0
https://www.visiotechsecurity.com/es/productos/accesorios/alimentacion/10xbatt-cr2-detail#tab=prod_0
https://www.visiotechsecurity.com/es/productos/accesorios/alimentacion/batt-cr2032-detail#tab=prod_0