Single workstation continuous monitor Meets ANSI/ESD S20.20 in accordance with ESD TR1.0-01-01. Continuously monitors 2 operator dual-wire wrist straps and 1 worksurface mat Visible and audible alarms indicate improper grounding of the operator and worksurface Adjustable operator test voltage and upper limit Test voltage can be set to 9 or 16 volts; test limit can be set to 10 or 35 megohms Adjustable audible alarm Buzzer volume may be disabled or set to loud or soft Simple installation and setup Mounting hardware and wire management clips are included North American power adapter included 770065 Calibration Verification Tester sold separately Use to perform periodic calibration testing of the 724 Workstation Monitor NIST Calibrated Calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology.