... popular in our worldwide clients' markets. LED tube power meter,LED tester,Power meter,Demo boxLT-AC11021,Input ... be AC 200V-250V,50Hz. If test LED lamp or other lamps without ballast inside the ... inside could test different size and wattage of LED tubes or T8-T5 fluorescent adaptors.7, ... can test different lamps with different base9,With terminal holders, it could test any electrical products with ...