Will this work through drywall?

I just tried a few walls near light switches where I knew there was elec wires with switches on. The meter would register about "1 line high" near the wires BUT it would also cause the meter to blink the same on places on the wall where there was absolutely no elec wires! I did the test both using the regular setting and also the Supper Sensitive setting. So MAYBE it MIGHT give you some idea where the wires are, but doubtful since there are to many false readings to be sure. That said, this meter works great if you are taking readings without sheetrock blocking it.

Manufacturer	KAIWEETS
Part number	HT100s
Item Weight	86 g
Product Dimensions	15.49 x 2.29 x 2.79 cm; 86 g
Batteries	2 AAA batteries required. (included)
Color	黒
Style	HT100s
Power source type	Battery Powered
Measurement Accuracy	AC 12-1000V
Specification met	CE, IEC 1010
Included Components	User Manual
Batteries Included	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Item Dimensions LxWxH	15.5 x 2.3 x 2.8 cm

KAIWEETS Voltage Detector 12-1,000 V AC/70-1,000 V AC Sensitivity Adjustment Voltage Testing Pen Pen-Type with LED Flashlight Percentage Display Continuity Tester Non-Contact Voltage Detection

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