Input and output unit for video door intercom system VT100. Changeover contact can be controlled as a pulse (4 sec.) or as a toggle switch (on / off / on), either via the special function button on the indoor station (for systems with 1 or 2 call buttons), e.g. for secure door opening, garage door control, light switching, etc., or via a call button, e.g. for an external gong. Any indoor station can be called via an external potential-free button (floor call). Load capacity of the changeover contact: 24V AC/DC, max. 5A, contact resistance <20 Ohm. Maximum resistance value of the external button: 20 Ohm. Simple configuration via DIP switch. 3-wire connection to the VT100 system via screw terminals. Power supply 15V DC from the system power supply. Can be placed in a flush-mounted box thanks to the compact design. Dimensions: 50 x 43 x 18mm.
