![]() ![]() The reality is that because it can read low voltage, the NCVT-3 can still pick up the current from the outside of the outlet, which is essential when dealing with the tamper-resistant outlets now required by electrical code. At first glance, this may seem like a problem, seeing as most other non-contact testers read power from an outlet only by being inserted into one of the openings. ![]() The NCVT-3 is unique because it cannot be inserted into an outlet. According to the company, the tool can also handle a drop of up to 6½ feet, which isn’t bad considering it’s a delicate piece of electronics. For a tool that’s often used in dim basements-or situations where the lights aren’t working-this is a minor but very helpful feature, and the Klein was the only model we tested that had this functionality. But the most useful feature is actually its bright LED flashlight, which can be operated independently of the voltage tester. The controls on the NCVT-3 are intuitive, the display is clear, and when testing it in a breaker panel full of live and dead wires, it was sensitive enough to read a dead wire from a short distance without giving us false positives from nearby live wires. This feature also makes it compatible with tamper-resistant outlets, which are now required by electrical code. And unlike some models we tested, it can automatically tell the difference between the two. ![]() The Klein NCVT-3 is a dual-voltage model, so it registers both standard voltage (house wiring) and low voltage (like irrigation, doorbells, thermostats). ![]()
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