Transponder chip (RFID tag) in key chain format for contactless activation of the door opener. Suitable for the VT200 and IP220 video door intercom systems. Learning and deleting transponder chips: for VT200 via the management transponders supplied with the door intercom, for IP220 and VT200TUT/TAT management via the display of the door intercom. Max. 320 transponder chips can be used in one system. Color: blue. Dimensions: 32 x 40 x 5mm. Weight: 6g.