The Honeywell Analytics S301-IRF-R514A is an infrared refrigerant gas sensor designed to detect R514A leaks in chiller and mechanical rooms. It uses infrared sensing technology to continuously monitor refrigerant concentrations and provide prompt detection when gas is present. Designed for use with the Honeywell 301EM-20 controller, it supports refrigerant safety applications in chill... https://www.partshnc.com/s301-irf-r514a-honeywell-analytics-r514a-refrigerant-sensor