Description
If the bulb lights up, continuity exists.
If the bulb fails to light, the circuit is open.
Not for use on live circuits, but incidental contact with 12V supply will not burn out led bulb.
Do not use while engine is running. Do not use on live circuits. Do not use on computer sensor feed circuits.
Fit type: Universal Fit
Checks the ability of wires, fuses, switches or other electrical circuits to carry current. 23V battery is included.
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