
So I took one to learn about EMF. It has been found to work when tilted or tapped at a certain angle. The angles would cause the sensor to shut off like it was picking up something, change the angle and it would stop. Clicking on it also turns it off. So I decided it was defective and sent it back to exchange for a new one. A new one came and did the same.

Cable tester BENETECH GM60
15 Review

VIVREAL 4 In 1 Stud Finder Wall Scanner With LCD Display - Center Finding Beam Finder And Sound Warning For Wood, AC Wire, And Metal Studs (Black/Silver)
24 Review

Qingping Qingping Bluetooth Smart Alarm Clock Green
22 Review

Room temperature and humidity sensor Aqara Temperature and Humidity Sensor white
25 Review

π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review

Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review

π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review

Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review