Two-in-one phase tester - Function: Checks the phase sequence and indicates whether any phase is open in a three-phase system. - Safety and reliability: Features clips for secure attachment to control panel ports, improving safety during testing. - Wide voltage test: Capable of testing three-phase AC voltage from 60V to 600V AC with high performance. - Easy to use: LED indicator shows if a phase is open and supports a buzzer alarm for audible alerts. Use scenarios - Commissioning new three-phase equipment such as motors or pumps: quickly verify correct phase sequence and confirm all phases are present before energizing. - Routine maintenance and troubleshooting: check phase integrity and voltage levels during inspections of fans, compressors, or conveyors. - Electrical panel fault diagnosis: assess three-phase connections in buildings or workshops to identify missing or open phases and prevent miswiring.