wireless alarm,zone alarm,burglar alarm,alarm system,security alarm,home security systems,safety product,anti-theft ... alarm wireless alarm,zone alarm,burglar alarm,alarm system,security alarm,home security systems,safety product,anti-theft alarm ... Wireless frequency: two option: 433MHz or 315MHz2. An adaptor: option: Input electricity from 110 ACV ~240 AC, customized. Adaptor choosing: two ...