There are many questions regarding Non-Contact Voltage Testers. They are a great safety tool when used as recommended and when they are functioning as designed.
Has mine been recalled?
Model: Klein Tools NCVT-1 Date code: 1119C-G8
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US Consumer Product Safety Commission announced a recall of select Klein Tools NCVT-1 voltage testers.
These were sold individually and as part of kits. I have one, but the recall is only for date code ending in H7. So I'm OK (code ends in G8).
Hazard: The on/off button can remain depressed during the power on or power off cycle, causing the tester to work improperly. Consumers testing electrical sources could fail to be warned of the presence of live voltage if the tester is not properly operating, posing a shock hazard to the users.
Full details at the link above. Safety first!