Home / Gas Price Changer / VisionMax by HDD (Hamilton Digital Designs) Fuel Price Controller VisionMax by HDD (Hamilton Digital Designs) Fuel Price Controller Categories: Gas Price Changer, Gas Price Changers Brand: Hamilton Digital Designs Description Description Gas price controller used in many Gas Price signs in Canada. Related products GS-8889 Gas Price Changer Read more GS-888910 Gas Price Changer $1,000.00 Read more Gas Price Changer RF Remote Control (GL-OIL-RF) $99.00 Add to cart GL_GMAN V3.2 Gas Price Changer LCD Add-On Module $99.00 Read more