The Caller unit (IP54 rated)
Sited by the front door or gate, this is the outdoor unit by which visitors announce and identify themselves. Available with one or two call buttons Comes in white ABS plastic with a ruggedised die cast brushed aluminium anti-vandal cover. Includes proximity Tag reader (Key Fob).
The Controller (IP54 rated)
Connected to the Caller unit, to which it supplies power and for which it makes radio communications to the cordless handset. It directly controls & powers a standard 12-volt ac or dc latch or electric lock, plus it has a volt free relay contact to trigger a powered gate or door system.