... Alarm System 1)Home DIY security alarm 2)built-in speaker and battery 3)GSM home ... burglar alarm 4)max 80pcs sensors LCD Security GSM 2-way Alarm System(LS-GSM-101)Home Security GSM ... line,everywhere have GSM frequency is suitable to use2) 8 wireless defence zones,80 wireless sensors3) Can dial 6 ... PIR detector,1 mini siren,1 Wireless door detector,2 Remote controllers,1 Built-in backup battery,1 AC/ ...