Level-sensing reservoirs allow users to accurately monitor material levels during the dispensing process with an adjustable sensor mount. Two sensor system configurations are available allowing integration into cartridge or pressure pot material reservoirs. Both configurations feature an SB-100 controller which activates a warning when the material level in the reservoir reaches a specified low level. Users can adjust the sensor height to their preferred volume. The SB-100 controller also features an external PLC connection that allows for a total line shutdown. Both functions save time and money by stopping the dispensing system when material reservoirs are empty.