Non-Contact Voltage Tester with 9 Gear Adjustable Sensitivity Voltage Detector AC Circuit Tester Tool LCD Display LED Flashlight Buzzer Alarm Range12V-1000V & Live/Null Wire Judgment AC1

This isn't the perfect product, but don't let this stop you from choosing this specific non-contact voltage detector. Like all such products (and there are MANY) it suffers from the same problems: at times too sensitive and at other times not sensitive enough. The reason is simple enough: these voltage detectors are based on the assumption that the person holding the detector in his hands is at ground potential (or close to it) and that doesn't always happen to be the case. Where this specific product stands out is that the sensitivity can be adjusted in 9 steps. This allows you to reduce the sensitivity in situations where there is so much energy in the area that the detector alerts even near non-conducting materials or at no object at all in mid-air. The multiple detection levels help to distinguish between weaker (possibly false positive) signals and stronger detection (likely to be an actual live circuit). I personally don't trust these voltage detectors to keep me safe when working on electrical circuit. The reason I bought this detector was for troubleshooting light strings and with its adjustable sensitivity and 3 level strength indication it does work reasonably well for that purpose (much, much better then voltage detectors that are not adjustable and only have a single alert level). I would not recommend it as a safety tool for a job site as it does appear fragile (lightweight plastic). Thrown into a bag of heavy tools it would probably not last very long. The reason I'm giving it 5 stars is for the sensitivity adjustment and multi-level alerting. I tested those features and they work very well for my intended purpose.

Works great and easy to use

Make sure you have set the sensitivity correctly for what you are looking for. Wall depth, voltage etc. will effect the accuracy of indication.

I have never owned a non-contact tool as sensitive as this thing. It's AMAZING. On the highest sensitivity, you will be able to tell there are nearby live wires. Not exactly where, but that there are some nearby. If anything, it may be too sensitive. At the lowest sensitivity it will even point which side of a double stranded wire is the hot side. That's pretty amazing for such an inexpensive tool. I keep it at #7 to start, then go up or down as needed for the job at hand. On #1 (least sensitive) and near a live peeled wire, it definitely let's me know if there's any danger. Unfortunately it will not help if triangulate if the wires are behind drywall. The results are too erratic, but that's not what this tool is designed for.

Nice reasonably priced tester. Love it. Works like it is supposed too

Safety first. This is a safety first tester. Sure beats getting shocked.

Got this for testing light fittings I was installing Works well Potentially life saving as can check for live power before messing with power

Used this for minor electrical checks when changing a few outlets, stored it in the original box. Pulled it out a few months later to check to see if a power cord was getting power and the plastic tip fell off. Glad I noticed it or else I might have been for quite a shock had a touched a live wire. Did not even last 6 months and probably used it 5 times.

The device is oversensitive even at lower sensitivity settings. For Both Null and Live it keeps on beeping and of low accuracy. Low quality product. Compared to another brand which I used earlier it is just a waste of money at the price range

Es muy funcional el producto y muy práctico, ya que tiene varios niveles de ajuste de sensibilidad, lo que facilita demasiado las lecturas de voltaje.

It does the job

Good products..seems to be pretty sensitive so no need to go over 3 setting on the pen. Tested on many sockets and he was accurate.Well design with a nice led light.Loud beep with bright clear indicator light when working in sunlight.

No response from seller to my complaint.