The ACL Staticide 100 Static Work-Check ESD Monitor is a straightforward effective device for checking many working features of ESD workstations. This constant monitor shows if the wrist strap is properly grounded but do not detect a dirty mat surface or ground faults between a work surface and grounding point. This simple one-second test will fail an ESD workstation with an incomplete circuit. The ACL Staticide 100 Static Work-Check ESD Monitor with only one test device will indicate if the ESD work surface is clean, if a worksurface has an unbroken circuit and is grounded, the wrist strap/heelstrap is worn correctly and working properly, and if the earthing point is connected to ground. This monitor will assure employees that are designated to an ESD work area have a complete unbroken circuit.