One of the main reasons I bought this device was the non-contact voltage detection but it didn't work. To be honest, he worked more like a metal detector. I could flip the switch for a specific row of outlets and make sure they were plugged off, but this meter would constantly flash a "Live" light if it stayed nearby. But even then he gave no sure testimony; You have to move the meter around the outlet and pay close attention to that little light only flashing for a split second. I returned it for a refund.
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