G7c Personal Monitor

Blackline Safety’s G7c leverages integrated 3G-cellular connectivity to wirelessly link your team to real people, while automating data analytics and compliance reporting. Should a gas leak, injury or health even occur, G7c confidently accounts for everyone’s wellbeing and whereabouts in real-time, so no call for help ever goes unanswered. Using the plug-and-play cartridges you can quickly switch between lone worker monitoring, single gas diffusion detection, multi-gas diffusion detection, or a multi-gas pumped device for the application at hand.


  • Fall detection and no-motion detection
  • SOS latch
  • Silent SOS
  • Low-battery
  • Worker check-in
  • Two-way voice and text messaging
  • Push-to-talk
  • Assisted GPS
  • Gas alarms
  • Indoor location technology
  • Configuration modes


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Blackline Safety Lone Worker Monitoring

G7c Automatically watches over employees and lone workers. All safety incidents are communicated to live monitoring personnel who can mobilize responders to an employee’s exact location or trigger an evacuation in real-time. With a two-way speakerphone, monitoring personnel can communicate directly with the worker, providing critical insights and situational awareness for optimized emergency responses. G7c delivers an exclusive customizable modular design, delivering the ability to expand functionality with a range of plug-and-play cartridges – everything is completely configurable to meet the needs of every industry, application, and scenario.

G7c devices collect more data than ever before, automatically streaming it to the Blackline Safety Network when in areas of cellular coverage. All event and alert data is time and location-stamped, powering our Blackline Analytics reporting platform. Bump test and calibration data is also communicated seamlessly, for live compliance visibility and reporting. Teams can easily analyze their data without ever having to manually collect and compile anything. G7c does it all, so you don’t have to.

G7c Brochure

G7c Datasheet 

Available Sensors and Ranges: 

Gas Name Formula Range Note:
Ammonia NH3 0-100 ppm
High-Range Ammonia NH3 0-500 ppm
Carbon Monoxide CO 0-500 ppm
High-Range Carbon Monoxide CO 0-2000 ppm
Hydrogen Resistant Carbon Monoxide CO 0-500 ppm
Carbon Dioxide CO2 0-50,000 ppm
Chlorine Cl2 0-20 ppm
Chlorine Dioxide ClO2 0-2 ppm
COSH (Dual CO/H2s) H2S/CO 0-100 ppm / 0-500 ppm
Hydrogen Cyanide HCN 0-30 ppm
Hydrogen Sulfide H2S 0-100 ppm
High-Range Hydrogen Sulfide H2S 0-500 ppm
LEL-Infrared LEL 0-100% LEL
Nitrogen Dioxide NO2 0-50 ppm
Oxygen O2 0-25% Vol.
Ozone O3 0-1 ppm
PID VOC 0-4,000 ppm* *Depends on Correction Factor
PID VOC 0-10,000 ppb* *Depends on Correction Factor
Sulfur Dioxide SO2 0-100 ppm


DOD Technologies, Inc. is a certified National Distributor of Blackline Safety Products.