240V Mains Input (Hook Up) Polarity tester, safety checks the correct wiring of hook up supply. Simply plug tester into an internal 3 pin mains socket and plug in the exterior mains lead to powersupply. Check lights on tester to see if electric supply is safe.
MAINS ELECTRIC INPUT POLARITY TESTER 240V
Original price was: $10.81.$3.24Current price is: $3.24.
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