RangerONE Dual Wire Constant Monitor – Model CM1601

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Item #: CM1601

  • Monitors one dual wire wrist strap
  • Uses resistance based monitoring technology
  • Easy to use and economical
  • Audible and visual alarm indicators


Dependable and accurate dual wire monitor for one person.

The RangerOne is an extremely sensitive monitor that accurately measures the electrical resistance of an ESD wrist band and signals if the device fail. The Resistance Ranger Series is the most reliable workstation monitoring system available.

The extremely sensitive monitors accurately measure the electrical resistance of an ESD wrist band and work surface and signals if the devices fail. Audible and visible alarms are triggered if the operatorÂ’s resistance exceeds 35 meg ohm. The Ranger Series saves time by eliminating the time-consuming testing of wrist straps and coil cords.


CyclopsTM Operator Presence Check
The Cyclops is an infrared sensor that causes the monitor to alarm when an operator approaches the workstation without connecting their wrist strap. The alarm continues until compliance is achieved.  Part number:  CMREMOTE-IR

 Wrist Strap Parking Station
Provides a jack that will allow an operator to disconnect and leave the dual conductor cord at the workstation without the wrist strap monitoring system alarm sounding. For use with mono plug coil cords. Part number: CP3000

Operator Presence Check

The RangerONE can be outfitted with the Cyclops Remote Sensor that detects the presence of an operator and alarms if a wrist strap is not connected to prevent ungrounded handling of ESD susceptible items


The  RangerONE is factory calibrated and does not require annual re-calibration.  It is recommended to verify calibration with the CM2015PV periodic verification meter at least once a year.  Download the RangerONEcalibration statement for your compliance program.

Superior Technology
Resistance based monitoring is the only true wrist strap monitoring technology available. Single wire systems simply detect that a person is wearing a wrist strap and put the monitor into an unalarmed state. Resistance monitors actually measure the resistance of the wrist strap in combination with the person and alarm if the product exceeds preset levels. This accurate measurement ensures reliability.

Additional information

Weight 0.5 lbs
Dimensions 4 × 1 × 3 in

Dual Wire Resistance Monitoring


Monitors 1 Wriststrap


1 Year (Manufacturer Defects)


Conductive Case

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