What's in the box:

Power Inverter 24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device 30A (Standard)

Features:
Convert DC 24V to DC 12V with this compact power supply converter, so you can power 12V devices by 24V truck or lorry battery.
It can supply power literally for 100's of devices from laptops and stereos to work lights, camcorders and TV's.
Practical and portable solution for your power problems, you no longer have to worry about power supply.
Compact converter in tough aluminum casing with pre-drilled mounting holes, safe and convenient.
Please pay attention to that the converter should be mounted on car chassis, body or heat sink.

Specifications:
Material: Aluminum
Color: Silver
Input Voltage: 24V
Output Voltage: 12V
Red Cable Max Current: 0.5A
Yellow Cable Max Current: 30A
Package Size: 14*8*4.5cm / 5.51*3.15*1.77in.
Package Weight: 134g / 4.73oz.

Package List:
1 * Power Converter