e, name, bypass, alarm delay, intelligent door sensor function, beep indication could do free setting. 5. Alarm inform mode: pstn call, gsm call, gsm sms 6. Alarm sms include alarm zone and sensors name 7. Work with contact id protocol(alarm information, status information, ac power off and recover, low voltage, test) 8. Support wireless ¡¡ãding-dong¡¡à doorbell function Color box:34.5*23*7.8cm, 10units/ctn
