Featuring wave distortion technology providing real-time monitoring of current/voltage phase shifts and provides 100% true continuous monitoring. Monitors the grounding integrity of two operators, and two ESD worksurfaces path to ground. Complete with 120 VAC transformer, worksurface ground cords, satellite remote monitors, control unit, and mounting hardware. Note: Work surface must have a conductive layer such as dual layer rubber or dissipative 3 layer vinyl or Micastat® dissipative laminate with conductive buried layers.