REMOTE BULB TEMPERATURE CONTROLLER, TWO SPDT SWITCHES, RANGE:0 TO 100F(-18 TO +38C), FIXED SWITCH DIFFERENTIAL:3F(1.7C), ADJUSTABLE INTERSTAGE DIFFERENTIAL:3 TO 10F(1.7 TO 5.6C),5 ft.(1.5m) COPPER CAPILLARY AND BULB, INCLUDES BULB HOLDER, BULB SIZE:1/2"DIA X 4-3/16"L, WEIGHT:1LB 1.9OZ, IN MFG BOX, ORIGIN:MEXICO