Description 1. Super luxury high end universal refitting switch style usb sockets with LED indicator. 2. CE certification, environmental friendly flame retardant material. 3. 12-24 V voltage general vehicle. 4. Output short circuit protection, overload protection, and polarity protection 5. Product size: 49.57*24.4*49 (mm) 6. Installation of the product rule: 27.2*21.2 mm 7. No rear barriers between terminals