1.Rechargeable Light bulbs 2.LED BULB lights 3.intelligence light 4. ... cut)With a built-in handhelder, also,it can be use as a portable LED torch.Feature:Model: ST ... office,etc.Instruction:1.When power is cut, automatically be converted to DC power supply, lamp start to work,Indicator ... is red2.When electricity coming back,automatically be converted to AC power supply,Indicator for green,3 ...