Feature 1Allows you to convert DC 24V voltage to DC 12V voltage, so as to powering 12V devices such as auto stereo, subwoofer, GPS navigator that can be used in 24V vehicles 2High efficient switch-mode voltage regulation models that provide 100% reliability of the power converter 3Built-in over/under voltage input, overload, overheat, and short circuit full protection, more safer to use 4With preset voltage memory function and power fail preset safeguard function 5High quality metal shell, anti-seismic and corrosion resistant, durable for long time useFeatures: Allows you to convert DC 24V voltage to DC 12V voltage, so as to powering 12V devices such as auto stereo, subwoofer, GPS navigator that can be used in 24V vehicles. High efficient switch-mode voltage regulation models that provide 100% reliability of the power converter. Built-in over/under voltage input, overload, overheat, and short circuit full protection, more safer to use. With preset voltage memory function and power fail preset safeguard function. High quality metal shell, anti-seismic and corrosion resistant, durable for long time use. 3 input wires and 3 output wires, easy to install, but professional installation is recommended. Specifications: Material: Iron Color: Black Input Voltage: 21V-28V Output Voltage: 12V Output Current/Rated Power: 5A/60W, 10A/120W, 15A/180W, 20A/240W, 30A/360W, 40A/480W (optional) Battery Loss Without Load: <0.1A Maximum Power Amplifier: >90% Working Temperature: 0 - 40 Voltage Alarm: 20V Over-temperature Protection: 55 - 77 Size: as picture show Package Weight: 322-737g Package List: 1 * DC 24V to 12V Power Converter