Funtion: Display 4 lamps at the same time . Also could test and compare the quality of 4 lamps at the same time. Testing Power , Power factor, Voltage and Annual power consumption(calculated by 10hrs/day)ect.
Withbuild-in shor-circuit protection mechanism, they are safe to use no
matter at home or laboratories.
With 1 year warranty if non-human reason error, free of charge replacement is available.
1. Useful and easy to carry
2. Best quality and after-sales services
3. safe to use
4. free of charge replacement if non-human reason error damage