VD10 多機能検電器

It is a non-contact voltage detector that beeps and lights up when it senses an electric field — so you can verify a wire is live without touching it.

Yes, the tester combines a loud audible alarm with a bright LED indicator, so it can be seen and heard even on a busy site.

Most models detect AC voltage from around 12V to 1000V. The exact range is listed in the product specifications.

Hold the tester near the wire or outlet — if it alarms, the circuit is live. Always test on a known-live source first to confirm the tester works, then test the target.

The same units work in both regions. All six models in the line, VD02, VD06, VD10, VD11, VD21 and VD123, are battery-powered non-contact detectors, so they never plug into the outlet and there is no plug or mains version to match. You differentiate between regions with the printed instructions language and packaging, not the hardware. For the AC detection range on each model, check the specifications table on the product page.

A common starting assortment is one compact entry model, VD02 or VD06, one middle option, VD10 or VD11, and one higher-featured unit, VD21 or VD123. That gives you three price points across the six-model line without carrying everything at once. For the exact differences in detection range, body size and buzzer output, check the specifications table on the product page, and we can send a mixed sample set so you can compare them before you order.

Yes. You can combine VD02, VD06, VD10, VD11, VD21 and VD123 in a single mixed-assortment order, and we carton each model separately so your warehouse can match each carton to your own SKUs. The minimum per model and carton quantity differ across the line, so tell our sales team the split you have in mind and we will confirm before you place the order. We are the factory in Wenzhou, so stock models ship on the regular lead time and production runs are scheduled on our own line.

Yes, all six models, VD02, VD06, VD10, VD11, VD21 and VD123, are available for private label. We can print your brand on the unit body and the box, and you can pick between color box and bulk carton packing for this line. Send us your logo and packaging design and we will confirm the printing method and any setup cost before production.

Almost always capacitive coupling. A de-energised conductor running alongside a live one forms one plate of a capacitor with it, and the alternating field puts a real voltage on the floating conductor while the available current stays in the microamp range. A non-contact tester responds to that field rather than to current flowing, so it indicates even though the conductor cannot deliver power.

Load the conductor deliberately. Use the low-impedance function on a multimeter if it has one, or connect a small load such as a filament lamp, and read the voltage again. A conductor held live by a supply keeps its voltage and drops only by what the load draws; a conductor held live by capacitive coupling collapses, because the coupling supplies microamps and the load asks for milliamps.

Long cable runs that parallel a live conductor, metal containment sitting at a potential, and the high input impedance of a digital meter all make it more likely. The effect grows with the length of the parallel run and with how closely the dead conductor follows the live one, which is why it turns up most often on long lighting circuits and on wiring installed in steel conduit.

Treat it as a first pass and never as the proof. Verify the tester on a known-live source, then on the circuit you are working on, then on the known-live source again, and confirm the dead verdict with a contact measurement made on the conductors themselves. Because a non-contact tester can be fooled in both directions, the rule is that proving the absence of voltage requires an instrument that makes contact.

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