The pocket 682 GW1X transponder is a device KNX / EIB that allows the recognition of transponder cards and notification of attendance supervision (eg. Reception); the device has three physical inputs ON / OFF available for controlling the switch door open / closed or other signals (window contact, bathroom pull alarms etc. etc.). The device has two relays 24 Vac, to be used for example for the control of the door lock, for the command of the "courtesy light", for activating electrical loads present in the environment or for other use.