The A/FLS Series Low Temperature Cutout Thermostat, otherwise known as a Freeze Stats are designed with a vapor charged capillary sensing element for use in equipment that requires low-temperature cutout protection. The purpose of the A/FLS Series freeze stats are to protect heating and cooling coils from freezing or to be used in any other equipment where temperature stratification may occur. All A/FLS series devices are 4 Wire, two circuit devices that can be used to shut down your system upon the air temperature reaching the low temperature limit as well as to simultaneously switch on a local indicator or remote alarm when used with your building management system or controller. The A/FLS Freeze Stats or low limit switches are available in four standard lengths with either Automatic or Manual Resets based upon the system design requirements. A NEMA 1 rated metal enclosure comes standard with a 1/2 inch conduit knockout included for all line voltage connections.