... hours/day).5,It could test two pieces different electrical products at the same time.6,TEST1 ... ).TEST2 is without any ballast inside could test different size and wattage of LED tubes or T8-T5 fluorescent ... power plug, and no need to connect the wire in additional.8,It have different socket converters , ... B22,GU10,G9. So it can test different lamps with different base9,With terminal holders, it could test ...