• RD-221B

  • 1、channel shadowing,
    2、close the door automatically locked,
    3、namely can and building intercom system and entrance guard system, also can be used independently.
Technical Parameters
Model RD-221B
Working Voltage 12VDC  
Operating Voltage 9-15VDC/AC
quiescent current  —
Operating current ≤1.3A
Operating Temperature  -25~55℃
Operating  Humidity 10%~90%RH
Time delay
Locked mode
Collision locking
Unlocked mode electronic control、key 、knob
service life
Warning Time
Lock tongue length
tamper alarm
The opening Angle
applicability timber or steel doors  
The door is not secured alarm functions
The lock tongue detection
size 154*106*54.5mm