... very popular in our worldwide clients' markets. LED tube power meter,LED tester,Power meter,Demo boxLT-AC11021,Input voltage ... should be AC 200V-250V,50Hz. If test LED lamp or other lamps without ballast inside the meter ... ballast inside could test different size and wattage of LED tubes or T8-T5 fluorescent adaptors.7, LOAD1 ... :0086+15813826713 T8 full range power meter(LED tube and bulb demo case)