Tunnel Sensors range of tunnel monitors are supplemented with a variety of accessories designed to assist with installation, operation and maintenance and to ensure optimum performance and reliability.

TSCU Operator Interface

Universal operator interface compatible with the TSL range of instruments for local visual display of readings, fault warning or alarm conditions plus multiheading capabilities



Calibration Checking

A range of of optical filters and reference gas cells to enable routine calibration checking of the TSL instruments.



Operational Accessories

Additional items such as ready-made power /comms / output cables; PSU and termination units plus associated installation accessories such as mounting brackets, extension sight tubes and weather covers.


For further information and technical specifications about this product please download a product brochure alternatively contact us via phone or email and a member of our team will be happy to help.

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Our business only uses companies that are proven market leaders because our clients require the best, and Tunnel Sensors delivers the accuracy and the reliability that we need every time.

Greg Love
Control Equipment Pty Ltd., Australia

Tunnel Sensors



The VIPA-L is a long path visibility monitor designed for use in ambient environments such as road, rail or other industrial applications.


The ILLIOS measures illuminance inside the tunnel bore to affect safe lighting conditions for drivers.


The LUMIOS MkIII measures the level luminance, or brightness, at tunnel portals to ensure that the visual perception of drivers is maintained, both day and night.