Extra sockets for input/output on door interface
PCB with extra input/output sockets for door interfaces.
Small PCB with extra sockets for connecting optional devices to the door interface.
The PCB has 4 input sockets and 3 exit sockets.
The optional units may be for centralized control of lights, a siren etc..
H 23 x W 37 x D 19 mm. / 0.91 x 1.46 x 0.75 in.