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When the electric pen is connected to an AC signal (5-30V), the frequency range can be estimated through the display of the digital tube.
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LED Digital DisplayThe test light has a bright digital LED display that makes it easier for you to read voltage data, which can be clearly displayed both day and night. | Stainless Steel ProbeThe sharp probe is made of pure steel material and is very strong, it can detect hard-to-reach narrow areas and pierce wires. There is also a special protective cover design. | Replaceable Test BulbUse a 5W light bulb, which is very bright and can help you test the circuit better. This bulb is common to car bulbs and can be replaced directly. |
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Large Alligator ClipThis alligator clip is bigger than other alligator clips on the market, and it can open wide enough so you can use it to clamp larger battery bolts or terminals. | Auxiliary ProbeIt is convenient to take power at the same time as the main probe in a narrow area. Like the main probe, it also has a special protective cover design. | 45 Inch Silicone CordThis silicone wire has a longer working radius, is more sturdy and heat-resistant, and is not affected by the elastic force, the alligator clip will not fall off. |

CMTOOL test light can quickly diagnose vehicle circuit problems and is a must-have tool for professional auto mechanics, electrical engineers, automotive engineers or circuit DIYers.


