BinMaster’s diaphragm switch is designed for use with free- flowing, dry granular or pelleted material being stored in bins, silos or hoppers. Mounted inside or outside of the bin, the diaphragm switch – also called a pressure switch – can be used for detecting high, intermediate or low levels of material. The device is connected to a light, horn or point level alarm panel and activates an alert when material comes into contact with, or falls away from, the diaphragm switch.