Piezo Sounder. For use when auxiliary current is limited - has a selectable current/sound pressure option with current as low as 60mA while still producing 100db. 106db/110mA with high-output. Patented case design fits single gang electrical box or wall plate. Snap-open hinged case cover for faster installation. Corner or ceiling mounting with no additional brackets or hardware. Channeled case back for convenient wiring access. Easy terminal block wire connections.