... system, alarm system, alarm, gsm alarm, home security, wireless alarm, accessory home alarm, home alarm system, home security system, alarm system, alarm, gsm ... home security Phone line auto dialler burglar alarm system Feature:1. With 32 defence zone,each zone can be work ... receiving distance: 100m 6) Alarm volume: 110dBwidely using in home ,office ,power system ,ect place for the safety and ...