X-Sense Wi-Fi Heat Alarm with 7-Year Sealed Battery and Easy Setup, Compatible w

Battery Cell Type Lithium. Colour Rf Interconnected Heat Alarm. Included Components 1 × Heat Alarm, 1 × Mounting Bracket, 2 × Screws, 2 × Anchor Plugs, 1 × User Manual. Alarm Audible. (included). Size 1 Heat Alarm.

eBay