... defence zone Wireless Security Alarm Product,home security protection (LS-GSM-004) 1.Voice remind,easy to operate by family2.Wireless ... Features:1) No need the fixed telephone line,everywhere have GSM frequency is suitable to use2) 6 wireless defence zones,4 wired ... when the power is offStandard packing:1 Main panel,1 GSM antenna,1 wireless PIR detector,1 mini siren,1 Wireless ...