Tunnel Visibility Monitors

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The TunnelTech 101 Visibility Monitor (VIS)  monitors the visibility within the tunnel and ensures that the tunnel ventilation system provides sufficient clean air for drivers to clearly see the road ahead.

Visibility

The TunnelTech Cold Smoke Monitor detects smoke from a fire to rapidly warn the operator of the hazard.

Cold Smoke

The TunnelTech 900 is an all-in-one Visibility and air quality monitor based on backscatter light measurement technology for visibility and electrochemical cell technology for gas measurements.

Visbility, CO, NO, NO2, SO2

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