... gas, door, hall, window, balcony, and perimeter places alarm;n Real-time, delay, 24 hours, bypass defense zones ... ;n Built-in AAA NI-HI rechargeable battery: make alarm when power off;n Comply with CCC ... gas, door, hall, window, balcony, and perimeter places alarm;n Real-time, delay, 24 hours, bypass defense zones ... ;n Built-in AAA NI-HI rechargeable battery: make alarm when power off;n Comply with CCC ...