ID ZK is a read only (RO) terminal, which requires as a standalone device no connection to a PC or a controller. It can be programmed to monitor the entrance to a door, a turnstile or a barrier and is working with RO and RW transponders. With an included master card these transponders can be programmed or deleted from the system, individually. Although the ID ZK is a RO reading unit, it can also read the serial numbers of RW transponders. So it can be integrated into existing RW applications without the need to issue new transponders. Although the ID ZK has an integrated antenna, optional an external antenna is available. This may be attached to an object from outside and connected to the ID ZK which is
installed inside. So for example the controller for a door lock relay would be placed indoors, protected against manipulation or vandalism. ID ZK is also available as a circuit board without housing.