... by keypad; 12. Sos,Fire,Gas,Door,Hall,Window,Ballcony and Perimeter places Alarm13. Real-time,24 hours ... Voltage: DC12V/1A Standby Current: <55mA Alarming Current: <450mA Wireless Frequency: 315MHz/433MhzGSM Frequency: 900/ 1800/ 1900MHz Back-up ... accept? It can accept unlimited wireless sensors including door, PIR sensor, vibration sensors, smoke sensor, gas sensor, water sensor etc. 3. Does can ...