€¢Electromechanical medium profile edge for rolling fire door applications. •Touch sensitive signaling allows for immediate reversing or stopping of motion. •The MT21 is completely felixible and will contour to curved surfaces. The MT21 will also act as weatherstrip. •Temperature range: -30F to 155F •Lead wire: 22 gauge universal •Sensitivity: nominal 6-8 PSI •2 wire NO configuration •Horizontal mount •ANSI/UL325 recognized component •One year warranty