Material:Metal colour:Silver Package Contents: 1 x Transformer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Waterproof module, water and electricity work experiment, load test for 60 minutes, there is no fault in the module. The transformer power supply has a service life of more than 100,000 hours. It is slim, small and easy to install. Wide range of applications: The waterproof housing makes the converter very suitable for a wide range of applications, including vehicles, security systems, hospital equipment, telecommunications, etc. It can be widely used in trucks, cars, taxi radios, car stereos, LCD , advertising screens, LED light bars, monitoring systems, motors, solar panels, electronic systems and DIY, etc. protection: These voltage converter embedded intelligent protection chips provide 11 protection functions such as overcurrent protection, overheat protection, short circuit protection, high voltage protection, and overload protection. (Note: There is no reverse connection protection. Please pay attention to the correct connection of the positive and negative poles!) High conversion efficiency: Our power converters use synchronous rectification technology to improve conversion efficiency. Has high conversion efficiency and stability. The conversion efficiency is as high as 94%. Low heat and stable performance. The start delay time is less than 2S.