... temperature), Voltage, Watt, Current,Power factor, Annual power consumption(calculated by 10 hrs/day)3. Equiped with different converter for E27, E14 ... B22,MR16, GU10, G9.Could test different bulbs with different bases. LED AC lux double power meter Features:1. Input voltage: 100-277V ... 1 year replacement warranty. DC AC Lux Meter for LED CFL lamp with digital volt meter DC AC Lux Meter for LED CFL lamp ...