The Discovery Open-Area Sounder Visual Indicator is an alarm device comprising a Sounder, a Visual Indicator and a short-circuit isolator for use with Discovery detection systems. It is supplied with a mounting base which incorporates a short-circuit isolator.

The Discovery Open-Area Sounder Visual Indicator provides an audible and visual warning of fire and is controlled by the fire control panel using the Discovery or CoreProtocol. The particular features of this sounder Visual Indicator are available when it is controlled by the full Discovery or CoreProtocol with the fire control panel programmed accordingly. Information on available features should be requested from the panel manufacturer.

These are identical to the Discovery Sounder Visual Indicator Base, but the Open-Area Sounder Visual Indicator is a wall-mounted stand-alone device that produces a higher sound output of up to 100dB(A).