Model: universal type applicable models: universal adapted models: universal supporting relationship: applicable commodity Description car modification naturally aspirated pressure relief valve sound electronic pressure relief valve simulation sound turbo sounder packing size: 16*13*15cm product weight: 0.60kg product material: ABS applicable models: General installation method: the positive and negative poles are connected to the electric frequency power supply, the red line is the positive pole connected to the positive pole of the battery, and the black line is the negative pole connected to the negative pole of the battery. Please use electrical tape to insulate the small switch when installing it. Do not directly control the metal body of the switch by hand. Because the hand is conductive, it is easy to cause short circuit and burn out. Because it is low voltage, it is difficult to feel electricity, so please pay attention to the method when using it. Install the switch under the foot pedal (there is a bracket that can be fixed and can be adjusted so that you can step on the accelerator to make a sound) envy the awesome sound of installing a pressure relief valve on a turbo car? Distressed natural suction can't install a pressure relief valve? Then we also want to have such an artifact, what should we do? The gospel has arrived, and the pressure relief valve imitator specially designed for natural aspiration is officially on the market. Abroad has been very hot.