A. Special low power consumption CPU；
B.Patented Mutil code.
C. Auto report the operating status；
D.Lost alarm；
E.Periodic report when rolling shutter is not well closed.
Model：MD-212R
Wireless emitting distance： outlay antenna 150m
Code：28 bit ID，8bit function code, 36 bit digital code.
Emitting frequency：433MHz/868MHz （Optional）
Operating voltage：3V （1pc Cr123 Lithium battery， battery life is 1 year）
Current: static ≤8uA, alarm:7-15mA (433MHz), static ≤8uA, alarm:7-15mA (868MHz)
Alarm output： wireless signal
Tamper report Self-check report：After the initial power-
on or reset operation of the transmitter, the door magnet
sends a working status report to the host every 50 minutes.
Environment： -10℃～50℃（14℉-122℉）
Appearance specifications: Transmitter 81 (L) * 32 (W) * 25 (H) mm
Sensor 150 (L) * 39 (W) * 11 (H) mm
Magnetic strip 150 (L) * 16 (W) * 16 (H) mm
Color： white
