Honeywell High Limit Manual Reset Aquastat Controller 100-240 FHigh Limit Manual Reset Aquastat Controller with 100 F to 240 F operating temperature. Product Specifications BRANDHoneywell LENGTH INCHES2-7/8 DIAMETER INCHES3/8 CAPILLARY LENGTH INCHES1-1/2 WELL SPUD SIZE INCHES3/4 NPT TEMPERATURE CONTROL RANGE °F100 to 240 SWITCH TYPESPST, contacts break on temperature rise APPLICATIONHigh Limit; Manual Reset DESCRIPTIONHigh Limit; Manual Reset Aquastat Controller LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERL4006E1117