@yawn_18cx: [ and safe ]:Professional Selector II will indicate genuine or .It is designed for quick, , and safe testing.LCD display & LED .Uses large / small switches for testing ,Emits audible sounds to easily differentiate the readings. [Bare Hands Operation]: the tests be done by your bare hands. If you put your gloves, the metal alert will not function since a normal levelof your hands is necessary for operation. test be done by TWO hands, for hold the and for the tester. As for the hand which hold tester, you have to the electricity conductive panel the of the unit.If you test the just by hand, you will get a wrong result. [Beeping Upon Startup]:Ensure correct installation and adequate power in the test pen . Also, clean the test pen probe as maintaining its cleanliness can testing efficacy.A beeping sound upon powering signifies the need for initialization settings. Consult the table the rear of the machine for the specific initialization settings considering the 's temperature and size. Adjust the initial number of illuminated lights by rotating the knob (the default setting is to have 4 lights illuminated at room temperature). [High-Frequency Sound when Testing Metal]:The high-frequency sound during metal testing is due to the test pen's operational principle, which relies thermal conductivity to distinguish between and . Since metal possesses thermal conductivity similar to , it generates a high-frequency sound during testing. [Simple to Use]: Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn our Tester Pen detector; place the tip of the Tester the stone (lightly pressed is sufficient) and If the stone is , or cubic zirconia, the tester will not beep. #repair #impactdriver #carrepair #recommendations #tools

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