This lamp features an all aluminum casing, a high transparency PC face mask, impact resistance, high brightness, and low power consumption. Suitable for any voltage supply between 12V-80V DC. It has high and low beam functions, with the negative pole of the black line, high beam of the red line, and low beam of the green or yellow line. If only one light is needed, connect only the positive pole of the red line and the negative pole of the black line.