... 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 Features:1. 8 ... -distance. Specification:1. Wireless frequency: two option: 433MHz or 315MHz2. An adaptor: option: Input electricity from 110 ACV ...