HRP-EP 1.too ultrathin ,the size as same as the name card 2.the world's ultrathinest mini-ballast 3.Passed ROHS and E-Mark Certification 4.all of process run by auto machine 5.Protection of reverse connection: No damage against ballasts and bulbs will be caused by reverse connection. (In the extent of input) 6.Protection of short circuit: Lock protection against continuous or long-time short circuit. (In the extent of input) 7.Protection of open circuit: Recover when reboot. Lock protection in 0.5s after open circuit. Recover when reboot. (In the extent of input) 8.Special request: Water proof, shocking resistant Current Norm:3.3A