BM 45 Diaphragm Switch for Non-Hazardous LocationsThe BM 45 is a pressure switch used for level measurement and point level detection in bins, tanks and silos containing grain, seed, feed or other granular or pelleted materials. It provides automatic point level indication of free flowing dry materials and can be installed to detect high, intermediate and low levels. It provides an audible or visual alert when attached to a horn, siren or light. It features simple, rugged construction and long