... is used for high and low pressure protection of some refrigeration systems, residential, commercial system.The pressure control is used ... as residential, commercial and automobile air-conditioners and icemakers, air compressors, and water heaters. It can also be used to ... 450250+/-15+/-15MPS350High Pressure350- -+/-15+/-15MPS450Manual Reset450- -+/-15+/-15 refrigeration pressure control switch