... voltage more stable.4. Overloading protectionDetect and cut the power off automatically when overloading, and recover automatically when normal rate.5 ... jack work independently7. RoHs materials8. Power DelayWhen power supplying (from shut off to start), it need few seconds to start work; When ... using test pencil to test it, the jack has power off.----------That mean, when take the light away, the jack ...