... 1,energy saving led lamp e27 2,led blub 4v. 3,long life >60000hours 4,high efficiency,energy saving. energy saving led lamp e27The ... ;2. 25 long life LED lamps, super brightness, Lower power consumption, 25 LED lamps can work at least ... :1. Put the switch to the AC power and load the holder, now the holder ... is off.2. Push the switch to DC power and load the holder, with the emergency function ...