... System(YL-007M2B) Features: 1.7 wired and 99 wireless defense zones; 2. LCD screen with time clock display; 3. Voice prompt for ... SMS alert for external power failure or recovery. Parameters: Input Voltage: DC12V/1A Standby Current: <55mA Alarming Current: <450mA Wireless Frequency: ... Volume: 110dB Kits: 1 main panel, 1 wireless PIR detector, 1 wireless door sensor, 1 siren, 2 remote controllers, 1 ...