3/8 INCH DIA X 2 7/8 INCH L COPPER REMOTE BULB AND CAPILLARY TYPE; SPST CONTACT CONFIGURATION; 0.25 AMPERE AT 0.25 TO 12 VDC CONTACT RATING; UL, CSA APPROVAL; LIQUID BOILER, TANK APPLICATION; 130 TO 270 DEG F TEMPERATURE RANGE; AQUASTAT[R] BRAND