The WAVE 2F unique hinged case design allows for installation without dis assembly. It fits a standard double gange electrical box and easy terminal block wire connections. It features and attractive new design for compact and and mounting versatility and performance. Features: Current draw 500mA max @ 12VDC Sound pressure output: Steady: 106db @ 12vdc, 1 meter Warble: 106db @ 12VDC, 1 meter Mount in standard double gang electrical box