The static strap function, SL-035 Wrist Strap Tester can quickly and easily check the following: 1. Test static strap and ground wire connection. 2. Test the impedance between skin and Static strap. 3. Test the connection during anti-static access panels, cushion for connecting ground Name: Wrist Strap Tester Model: SL-035 Condition: Brand New From Factory Instruction Impedance Calibration: Buzzer Size: 80 X 40 X 117mm (W * H * D) Power: 9V battery (not included) Operation: Insert the banana plug on the end of the static strap groundcord into the jack located on the front of the wrist strap tester. The wearer of the anti-static wrist strap then pushes the metal pushbutton on the wrist strap tester. A properly operating wrist strap will give an "OK" LED indicationon the anti-static wrist strap tester. If either RED "FAIL LOW" or YELLOW "FAIL HIGH" LED's light, and the audible indicator sounds,then the wrist strap should be discarded and replaced with a new one. aeProduct.getSubject()