Mountable OMNITRONIC PA program selector and volume controller for 100 V audio systems or other analog signals. The mono unit selects between six signal sources and provides volume attenuation in 11 steps. It has a built-in 24 V emergency priority relay, a rated power handling of 10 W RMS, a frequency range of 50–18,000 Hz, screw plug connections, a black plastic front panel and flush-mount housing. An optional finery housing is available.