Sven:
The "touch lite" tester is an item made by Fluke, Amprobe, Gardner-Bender, TIF, etc.
It's similar in size to a magic marker, or a "fat" pen.
Operation is:
You touch the tip on a "live" conductor and the tip illuminates. Some models have a audible tone additionally. The concept is that you can have an indication of potential (voltage) in a conductor without having to open any splices, or "skin" the conductor.
The tip of the Fluke model is capable of fitting into the "hot" slot of a receptacle.
They are a great tool for a fast indication of voltage.....BUT they do not "indicate" what the voltage is. Voltage ranges of 24 to 1500/122000 volts are available, DEPENDENT on the unit you buy. The hi-voltage TIF model requires a hot stick adaptor. Price range is $15 to $125.00.
I have a Fluke and a TIF (w/hot stick)
Hope this answers your query....
John
