The SVS990 is a compact Voice Switching Control Panel for up to 4 radio channels. Fitted with a Goose-Neck microphone, each channel has a push button to select the desired state of that channel (Active/Monitor). For pairs of led’s indicate to the operator of the state of each respective radio channel. It is fitted with two knobs, one to control the volume of the selected Active radio channels and the other for the volume of the Monitored channels. The panel has one internal speaker; this speaker can be configured to annunciate the Active, the Monitored or both channels. The panel provides connections for an external speaker, headset and PTT switch.