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TUNNELVISTA is glad to announce the availability of the new REDLINE20, short range opacimeter to control the visibility/opacity level in road and rail tunnels, developed with the purpose of placing on the market a low cost and highly reliable sensor as an alternative to our well known REDLINE250 that is the state of the art device in this...

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• tunnelvi235
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November 18 of 2015 was the anniversary of the presentation of the first of EDS tunnel products now known with the TUNNELVISTA brand, and so is the anniversary of the birth of this product range. First product was the first ever long range opacity meter REDLINE250.