"Cheap, works well and very useful!! It lights up green when it is switched on and then flashes red and makes a noise when detecting an AC voltage. Very useful for when dealing with electrics round the house."
"Apart from its serious safety value this is a great addition to anyones toolbox because if you are as geeky as me you will go round the house touching light switches and sockets to see the detector flash its lights and buzz its buzzer.
This is a great and safe way to detect live circuits without touching bare metal contacts, Simply place the probe on the suspected live wire or near it and the pen will tell you whether it is live or not. Super value"
"Bought this as a special offer featured on the front of the Screwfix counter. Got it home, switched it on and it didn't work.....until I realised I had to remove the plastic wrapping on the supplied batteries! Then it worked very well and was very sensitive, only needing to be within a couple of inches of a live circuit when the tip flashes and a buzzer sounds. It is of a pen-like form and has a convenient clip to hold it in a pocket. A sturdy and quality product."
"This is useful for tracking a live wire, but I would not use it as an alternative to a phase tester, as it does not have a 100% accuracy hit rate. I've tried it on various sockets and fittings with differing results."
"I'm a bit disappointed with this, maybe my expectations were unrealistic? This struggles to detect live cables through the outer (grey) PVC covering. If you've got your red/black or blue/brown exposed then yes, it will pick up if the live is live but typically you're already in a socket/switch/junction box with conductors exposed if that's the case and you'll have bare conductors to put your traditional neon tester on anyway.
I was hoping to use this to make sense of a spaghetti of lighting cables in the loft so I could identify which cable fed which gang on the multi-gang switches.
What I discovered was that if you touch the grey cable outer on the side that has the live running through it then yes, it mostly picks it up but it's a very deliberate action you have to make and you have to check both sides to be sure so it's time consuming.
I did take my first one back and exchanged in case it was a bad example but the replacement acts exactly the same.
Reliability is impossible to judge this early so given average of 3."
"Built in light is green?? No use at all.Should be white, a product like this is paramount that it should detect live wires however this one sometimes does and sometimes doesn't even on the same live wire with the brand new batteries installed. this is getting returned asap avoid at all costs"