CONNECTED WITH THE BELL TO CONTROL OUTSIDE
WITH DIGITAL CAMERA(THE CAMERA WHICH CAN MONITOR
AND CONTROL IN LONG-DISTANCE CAN BE CHOOSED)
10 HOURS WAITING PERIOD(LIQUID CRYSTAL DISPLAY)
7 HOURS WORKING WITHOUT POWER SUPPLY
COMMUNICATION:RS232/RS485 TCP/IP USB
POWER:AC 220V 50HZ