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Title: OK, but poor sensitivity
Review: So it does what it claims. What it does not say, how poor the sensitivity is. It's usable, but just barely. I don't think it's really worth the money. It works better with 220V than 110. Put next to a live insulated wire it will chirp an light. However, if testing a wall socket, forget it. The socket's live metal parts are just too far back to activate it.
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