The Transponder Reader GRTR-J0x-KNX is an EIB/KNX wall mounting device suitable to access control applications. This device can be used in any kind of building (Hotel, Hospital, Offices, Parking) where the access control application is required. The device is equipped with two binary inputs (dry contacts) that can be used, for instance, to control the door status or other signals coming from external switches/contacts (i.e. windows, bathroom emergency alarms). The transponder reader is equipped also with two output relays which can be used for general purposes, typically to open the door or turning on the courtesy light inside the room. The product provides on the front side four LEDs in order to enlighten 4 icons to display the following states (e.g. in case of Hotel management): SOS request, Service Call, Client status (“Busy room” or “Do not Disturb”). The LEDs and icons can be configured in association with other alarms or events. The transponder reader can reads cards or keys at a maximum distance of 30 mm from the front side