Product Dimensions:11.6 x 11 x 4 cm; 322 Grams Item Weight:322 g Features: 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: 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 About this item [Specification]:Output Current/Rated Power 20A/240W; Input Voltage 21V-28V; Output Voltage 12V [Car Voltage Reducer]: This device help 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 [Premium Material]: The step-down transformer is made of premium metal shell; Anti-seismic and corrosion resistant, durable & longlasting [Safe to Use]:This car electric converter adopts built-in over/under voltage input, overload, overheat, and short circuit full protection; Safer to use [Easy to Install]:3 input wires and 3 output wires, easy to install; But professional installation is always recommended See more product details [Specification]:Output Current/Rated Power 20A/240W; Input Voltage 21V-28V; Output Voltage 12V [Car Voltage Reducer]: This device help 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 [Premium Material]: The step-down transformer is made of premium metal shell; Anti-seismic and corrosion resistant, durable & longlasting [Safe to Use]:This car electric converter adopts built-in over/under voltage input, overload, overheat, and short circuit full protection; Safer to use [Easy to Install]:3 input wires and 3 output wires, easy to install; But professional installation is always recommended