This audible signal produces a 110 dB warning tone to alert the operator or nearby personnel. It is wired into the tractor's electrical system and activates when the circuit is closed, typically by a switch or sensor monitoring a machine condition such as low oil pressure or an engaged parking brake. The unit is designed for surface mounting on the cab or chassis, with two electrical terminals for connection to the vehicle's 12 V supply. On replacement, ensure the mounting surface is clean and the wiring polarity matches the original installation.