Red LCD Screwdriver Mains Testing Item

A red plastic mains testing screwdriver type thing, which can be used in direct contact with a conductor to show the approximate voltage range, or just placed in the vicinity to show whether voltage exists or not.
99p from an ebay seller. Search terms 'Test Pencil Electrician Digital Display' will find this. However this item is not suitable for any real testing, do not use it or anything similar.
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