... and very popular in our worldwide clients' markets. LED tube power meter,LED tester,Power meter,Demo boxLT-AC11021,Input voltage : AC ... be AC 200V-250V,50Hz. If test LED lamp or other lamps without ballast inside the meter, the input voltage should be ... with wire.10,With fuse inside the power sockets, it could protect the over load short circuit.11,Compact size, small volume, very light ...