- 4 ways circuit tester,voltage tester,electric tester - CE,CCC,ISO9000 Certificated 4 ways circuit tester,voltage tester,electric testerSpecification:- 4 ways circuit tester- Rated Voltage Range: 110-450V;- Voltage Indication: 110/220/277/450V ACAny further enquiry please contact me by call or by email. 4 ways circuit tester,voltage tester