Super load six tone electronic car alarm security. Ideal for any 12 volts system such as cars, trucks, go cart, golf cart, RV and boat. Designed for vehicles with a little space in the engine compartment. It delivers very loud sound. The loudness is 120db/15 watts and the power is DC6V – DC12V. The dimension are 2.5” in length, 2.25” in width, and 3” in height.