* Battery Specification: CR2 *2PCS ;

*  Battery life :1 year, trigger 2500times ;

* Standby Current:24.8uA ;

* Working current :110mA ;

* Product size : 68mm(L)*68mm(W)*28mm(H).

* Maximum alarm sound:90db;

* Wireless distance:45M ;

* Wireless Frequency: 2.4GHz,1T1R .

* app: iOS/Android

* Works with Alexa, Google Assistant and IFTTT