1 Pc Car Light Off Warner Control Buzzer Beeper 12V Car Electronic Buzzer Beep Tone Ringer Light Adapter The device produces a humming or buzzing sound when the vehicle's lights remain on after the ignition key has been removed.It helps prevent drain by alerting the driver that lights are still active.A visual indicator is not included.The unit can be installed in various locations such as the fuse box, driver's door, or any convenient area.Mounting options include screws or adhesive tape.Adhesive strips are not included.Specifications: Condition: Brand length: approximately 15 cm Housing dimensions (LxWxH): approximately 38 x 17 x 14 mm Total length: approximately 16.5 cm Mounting hole size: approximately 2.31 mm Sound level: 75 dB Color: Black Package includes: 1 x Car light-off buzzer system 12V