Honeywell Aquastat Controller, High and Low limit, 120 to 240 VAC/0.25 to 12 VDC, 100 to 240 degree Fahrenheit, 5.1 to 48 A, 5 to 30 degree Fahrenheit Differential, Horizontal Mount, 3/8 x 2-7/8 inch Copper Bulb, Micro Switch Snap-Acting Switch
Aquastat Controllers are immersion type devices for limiting or regulating the temperature of liquids inch boilers, storage tanks and other applications where temperature control is required.