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3 different specifications of relay pins (4-pin/5-pin switching)
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Connect the wire to car battery and press TEST button to start the test.
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Through the car battery (11V-15V) to the relay coil, the detector can properly check the relay contact function.
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LED display, clear instructions, LED green light indicates normal, red light indicates relay failure.
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Observes contact data, closure time, relay inertia at each test stage, etc.
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Comes with rubber sleeved battery clip, safe to use
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Compact size, lightweight and portable