High Limit Controller, Application High Limit, Maximum Control Temperature 270 Degrees F, Minimum Control Temperature 130 Degrees F, Differential Temperature Not Applicable, Mounting Orientation Horizontal, Vertical, Number of Switches 1, Switch Action Breaks, Burner Circuit Voltage Type Millivolt, Capillary Tube Length 3 in, Spud Size 1/2 in NPT, Contact Form SPST, Multizone Control Compatible Not Applicable, Product Type High Limit Controller, Probe Length 2 7/8 in