... 99 wireless defense zones 3.LED display New GSM wireless home alarm system with color LCD screen(GS-M2B ) Function ... fire, gas, door, hall, window, balcony, and perimeter places alarm;13.Real-time, delay, 24 hours, bypass defense zones programming ... and GB12663-2001 national standard.Alarm Panel front schematic diagram:Alarm Panel back schematic diagram:Alarm system LCD playerWired terminal block ...