Immersion Controller, Application High Limit, Maximum Control Temperature 240 Degrees F, Minimum Control Temperature 180 Degrees F, Differential Temperature 15 Degrees F Fixed, Mounting Orientation Vertical, Number of Switches 6, Burner Circuit Voltage Type Line Voltage, Low Voltage, Capillary Tube Length 4 1/2 in, Spud Size Not Applicable, Contact Form SPST, Multizone Control Compatible Not Applicable, Product Type Immersion Controller, Auto/Manual Switch Included Yes, Overall Depth 3 1/8 in