- Single Workstation Continuous Monitor
Continuously monitors the path-to-ground integrity of one operator and one ESD worksurface 
- IMPROVED Operator Alarm
Alarms when the operator unintentionally disconnects from the monitor or the connection between the banana plug and monitor’s jack is intermittent 
- Desco Wave Distortion Technology
Provides stable continuous monitoring (versus pulsed or intermittent) of the wrist strap’s path-to-ground* and the presence of its 1 megohm safety resistor 
- Park Snap
Allows the operator to disconnect (and park) a wrist strap when leaving the workstation without creating a false alarm 
- Single-Wire Impedance Design
Meets ANSI/ESD S20.20 in accordance with ESD TR1.0-01-0 
- 1.2 Volt Operator Test Voltage
Reduces the risk of electrical overstress (EOS) for the handling of sensitive components 
- <50 Millisecond Alarm Response Time
Identifies failures and intermittencies that inferior technologies miss 
- Continuous Visual and Audible Alarms
Illuminates green to indicate proper grounding; illuminates red and sounds audible alarm when intermittent or failed connection occurs 
- Calibration Verification
Use the Desco 98221 Wave Distortion Monitor Verification Tester to check the test limits of Wave Distortion Monitors without removing them from their workstations 
- NIST Calibrated with Certificate Included
Calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology. 
- 100-240VAC Power Adapter with North American Plug
Works with standard electrical systems in North America, Japan and Asia 
- Made in the United States of America
This item is made and stocked in Chino, CA  
*The ESDA Wrist Strap standard is ANSI/ESD S1.1. The Wrist Strap System required limit per ANSI/ESD S20.20 Table 3 is 0.8 to 1.2 x 106  ohms with product qualification testing per ANSI/ESD S1.1. Test the range of the monitored circuit is 500 kilohms to 10 megohms.