The ECCO 500 series 12 to 24V 102db sound level surface mount back up alarm features a surface mount design that provides secure and stable installation on various surfaces. It employs layers of sound frequencies to break through environmental noise. The alarm's low-current draw minimizes strain on the vehicle's electrical system during operation. Its compact design allows for installation in tight spaces without compromising functionality. Additionally, reverse polarity protection is included to prevent potential electrical damage, further.