... and very popular in our worldwide clients' markets. LED tube power meter,LED tester,Power meter,Demo boxLT-AC11021,Input voltage : AC ... wattage: 300W.4,Testing parameters: Voltage, Current , Power, Power factor, Annual power consumption.(Calculated based on 10 hours/day).5,It ... load short circuit.11,Compact size, small volume, very light , convenient to carry Best after sales-servicesWith 1 year ...