Audio/video switching module for Simplebus Top 2-wire digital systems. For use in systems with a maximum of 2 entrances with Quadra series external unit. Power supply from bus line. Dimensions: 35x90x58mm (2 DIN modules). Features Audio/video switching module for audio/video kit systems For use in systems with a maximum of 2 entrances with Quadra series external unit Power supply from bus line Dimensions: 35x90x58mm