When the circuit breaker is tripped, the tool will NOT be able to conduct battery current to the tip even when the power switch is pressed. Intentionally tripping the breaker and using the tool to probe can be considered an added precaution against accidental pressing of the power switch.
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ANENG 1 Pair Alligator Crocodile Test Clip Clamp For Multimeter Tester Probe Crocodile Electrical Clamp for Testing Probe Meter
Aliexpress UK
When the current overload, VDIAGTOOL V200 Automotive Circuit Tester will automatically disconnect the protection circuit to reduce unnecessary losses. 1×VDIAGTOOL V200 Electric Circuit Tester. V200 Electrical System Circuit Tester Functions.
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BST-050 ZK002 superfine universal digital multimeter probe test leads needle tip tester probe wire pen cable multimeter feelers
Aliexpress UK
Sharp steel probe easily pierces wire insulation to inspect circuits. Bulb: 3W, Bulb Cord Length: 102mm/4.0". The circuit board has line protection function, which is safer and more resistant to burning.
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ANENG 1 Pair Alligator Crocodile Test Clip Clamp For Multimeter Tester Probe Crocodile Electrical Clamp for Testing Probe Meter
Aliexpress UK
CAR TRUCK CIRCUIT TEST PEN -- Professional automotive circuit tester / circuit test light for testing circuits from 6v/12v/24v Light in the handle illuminates when the circuit connection is complete.
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2pcs Alligators Crocodile Test Clip Clamp 10A/1000V Wire Tips Test Clip Clamp For Multi-Meter Tester Multimeter Tester Probe
Aliexpress UK
Heavy Duty Circuit Tester: Designed for automotive car electrical system testing. Four Stroke. Overload Protection: Bulb will blow if there is an overload, ensuring safety. Compact and Lightweight: Convenient to carry and use anywhere.
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Mini LCD Digital Thermometer Hygrometer Gauge Tester Probe Incubator Aquarium Temperature Humidity Meter Sensor Detector Tester
Aliexpress UK
Probe shape: Cone shaped. Signal strength display mode: LCD digital display. Display: LCD display.
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LP-1 Logic Tester Probe High Frequency Response DTL CMOS Pulse Memory Logic Tester LED Indicator Test
Aliexpress UK
1 Car Circuit Tester（without battery）. Easy operation : After a simple hook-up of the unit to the vehicle's battery, the automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward.
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ANENG PT1004B Digital Multimeter Test Leads 1000V 10A Probe Tester Cable Combination Measuring Probe Cable for Tester Multimetro
Aliexpress UK
All images shown are for illustration purpose only. 3 Red Version Supp in Case.
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FY-12 Mini LCD Digital Thermometer Hygrometer Gauge Tester Probe Incubator Aquarium Temperature Humidity Meter Sensor Detector
Aliexpress UK