... ,current,and annual power consumption for LED T8 tube tester, ... LITE LED tube tester --T8 Full Range Power Meter is a very practical tester to make you more professional ... tube.3. Testing parameters: Voltage, Wattage, Current,Power factor, Annual power consumption(calculated by 10 hrs/day)3. Equiped ... ,good protection.7. 1 year replacement warranty. Power Meter for LED T8 Tube, fluorescent tube tester.