... , ADEMCO ; 3) auto arm/disarm 4) watchdog Wired/Wireless Alarm/Security System home alarm system fire alarm The sn2200 is a very powerful ... using our pir, ceiling mount pir, directional pir and vibration sensor, these sensors can display low voltage on the LCD and ... to be watchdog zone, during a programmed time, if the sensor not triggered, then the panel would alarm13. Built in rechargable ...