Protege ZM Single Gas Monitor from 3M Scott

The 3M Scott Protege ZM Single Gas Monitor is an easy-to-use, zero-maintenance gas detection solution that delivers high performance in a small package. It is available in oxygen, carbon monoxide and hydrogen sulfide single gas models. This single gas monitor is incredibly reliable, giving industrial workers and first responders the confidence to focus on the task at hand.

With one button activation, adjustable alarm settings and an easy to read display the Protégé ZM is simple to use. Just turn it on for the first time, and the monitor does the rest. Using the default settings from the factory there is no need to set up or program the monitor. Once activated, the Protégé ZM monitor does not require charging or calibration. These monitors can be deployed in the field 24 hours a day, every day for two years, maintenance and hassle free. The H2S and CO models include a hibernate feature which allows you to extend your battery life up to one additional year.

Because of its small size and strong, stainless steel alligator clip the Protégé ZM can be conveniently placed where you want it. The monitor is small, lightweight  ergonomically designed and meets IP67 requirement for ingress protection. The unique Protégé ZM profile fits you hand nicely, making the monitor comfortable to hold. It’s so lightweight and small you will forget you’re wearing it while it protects you.

The Protégé ZM monitor is supported by a portfolio of accessories including a  four bay test station and IR Connect programmer. The test station stores data, programs the monitors and supports  bumping, calibrating, hibernating and programming of up to four monitors simultaneously. It is available in both portable and table top version. The test station’s simple two button operation and intuitive design means you will be up and running in no time. A convenient gas inlet on the side panel allows any size calibration bottle to be used. The IR Connect allows programming and hibernating of individual monitors. You can also use the IR Connect to calibrate your monitor and download event logs


  • Zero maintenance single gas solution
  • Available in hydrogen sulfide, carbon monoxide and oxygen configurations
  • Two year operating life, no charging or calibration* required
  • Hydrogen sulfide and carbon monoxide models include hibernate feature to extend battery life
  • Three point alarm system including audible, visual and tactile alarms
  • Customizable LCD display can show operating life remaining, real time gas readings or both
  • User configurable alarm setpoints, bump, and calibration reminders
  • Datalogging capabilities
  • IP 66/67 rated enclosure (3rd party certified)
  • Supported by portfolio of accessories including a 4-bay test station and IR Connect programmer

*Under typical conditions. Please see product User Manual for additional details and use requirements.


Range Carbon Monoxide: 0-300 ppm
Hydrogen Sulfide: 0-100 ppm
Oxygen: 1.0-30.0% by volume
Display Time remaining (default) or gas reading (optional), gas type, functional test validation, bump test due indicator, battery level
Alarm Set Point Pre-programmed default settings, customized factory settings available, configure use settings via software and the IR Connect or test station accessories
Alarms Visual: red LED
Audible: 95 dB
Temperature Range -20 to 120°F
Humidity 10 to 90% rH
Protection Class IP 65
Battery Life 2 years, hibernate mode extends life up to 1 additional year on CO and H2S models
Approvals CE marked, EMC/EMI/RFI complinat
Event Logger Logs last 25 events
Size 2.5″ x 3.3″ x 0.8″
Weight 3.8 ounces

Ordering Information

For pricing on the Protege oxygen gas detector, hydrogen sulfide gas detector and carbon monoxide gas detector, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email

Catalog No.
Protégé ZM Single Gas Detector for Carbon Monoxide
Protégé ZM Single Gas Detector for Oxygen
Protégé ZM Single Gas Detector for Hydrogen Sulfide
Portable Test Station
Protégé ZM Stationary Test Station

Accessory Ordering Information

Catalog No.
Protégé ZM IR Connect with USB Cable
Protégé ZM IR Connect Spare USB Cable
Protégé ZM Alligator Clip
Protégé ZM Calibration Cup


Protege ZM Gas Monitor Literature

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