Fluke 1AC-II Voltage Detector Pen
Bought this after cheap one
I initially bought the cheap blue voltage tester screwfix sell, as I'm really a DIYer so don't need the best of the best. However upon testing I found the cheap one a bit unreliable with whether or not it would light up!! Which considering that is it's only function is a bit daft.
So I decided I had better spend out and buy the decent one - after all the whole point of this device is to be completely reliable so you don't electrocute yourself. I have to say I've been pleased with the fluke - it has been 100% reliable and that's what you need. Also easy to change the batteries (the cheap blue one I couldn't get the batteries out!).
As pointed out by others it has to be right next to the 'live' wire within the cable so make sure you test against both 'sides' of a cable to ensure it is not live.
A tone (beep) can also be set to activate or not depending on your choice. Although I admit I haven't worked out how to turn it off or on yet (haven't read instructions!). The red light is sufficient in my opinion. It flashes twice per second to let you know it's on, and lights continuously if it detects live.
FYI this cannot function as a live wire detector for cables buried in walls.
28 Feb 2015
You get what you pay for
This volt stick is the most expensive one you can buy at screwfix but you get what you pay for with this sort of stuff, its reliable robust and easy to use, would recommend you spend a little bit extra and go for the top quality
21 Feb 2015
useful and accurate litte tool
I bought this to identify a supply cable in a tight bunch of cables all with sheathing (lighting circuits, domestic job). It works fine through sheathing and it would flash/bip only when you on the side of the cable with the brown (line) wire. Since than I used it many times in similar situations, never failed me. One of the tools that I have often with me. Bit expensive but overall happy with the purchase
27 Dec 2014
Saved my bacon
Great bit of kit, a must when working where there are any cables, turned off electrics at one house but cable was still live, glad I had this to check cable with.
21 Dec 2014