... 2.Useful and promotion 3.Customize 4.Easy to carry LED democase:1.Partable,convenient to show your lights.Using LED democase,You ... /36,atc.3.The tester consists of Electronic tester and digital tester.(1)The electronic tester (small white box) is ... Power factor,carbon dioxide emissions and power consumption.(2)The digital tester can be customize.Amperemeter,Voltmeter.powermeter,PFmeter,power consumption ...