VD10 多功能感应式声光报警测电笔带手电筒 L

它是一种非接触式电压探测器，在感应到电场时会发出蜂鸣并亮灯——这样无需接触导线即可确认其是否带电。

够的。该测试仪将响亮的蜂鸣报警与明亮的LED指示灯相结合，即使在繁忙的现场也能看得见、听得清。

大多数型号可检测约12V到1000V的AC电压。具体范围请参见产品规格。

将测试仪靠近导线或插座——如果发出报警，说明电路带电。务必先在已知带电的电源上测试，确认测试仪工作正常，再检测目标对象。

同一批产品两个地区都能用。这个系列的全部六个型号，VD02、VD06、VD10、VD11、VD21 和 VD123，都是电池供电的非接触式测电笔，不需要插到插座上，所以没有插头或市电版本要匹配。地区差异靠印刷说明书的语言和包装来区分，而不是硬件。各型号的交流检测范围请查看产品页规格表。

常见的起步组合是：一款紧凑入门款（VD02 或 VD06），一款中档（VD10 或 VD11），一款功能更全的（VD21 或 VD123）。这样六个型号的系列里你占了三个价位点，又不用一次备齐所有型号。检测范围、机身尺寸和蜂鸣器输出的具体差异请看产品页规格表，我们也可以寄一套混装样品，让你下单前先对比。

可以。你可以把 VD02、VD06、VD10、VD11、VD21 和 VD123 放在一个混装订单里，每个型号单独装箱，方便你仓库把每箱对应到自己的 SKU。系列内每个型号的起订量和每箱数量不同，告诉销售团队你计划的分配比例，下单前我们会确认。我们是温州工厂，现货型号按常规交期发货，生产订单在我们自己的产线上排期。

可以，全部六个型号，VD02、VD06、VD10、VD11、VD21 和 VD123，都支持贴牌。我们可以在机身和包装盒上印制你的品牌，这个系列可选择彩盒或散装纸箱。把 logo 和包装设计发给我们，生产前我们会确认印刷方式和相关开版费用。

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.

我们既支持小批量试单，也承接整柜批发。请告知您需要的型号和数量，我们的销售团队将在24小时内回复报价和交期。

支持的。我们是一家 2008 年创立的工厂，提供OEM/ODM服务，包括定制标签、包装和可调节测量量程。把您的规格要求发给我们，其余交给我们处理。

可以，我们鼓励在批量下单前先订样品，让你亲自确认做工和校准。样品走快递，一般 3 到 7 个工作日到货，样品费用会在同一型号的首个批量订单中抵扣返还。通过联系表单或邮件告诉我们需要的型号，我们报样品价，付款后即发货。