High/Low Limit Controller Application Circulator High Limit Maximum Control Temperature 240 Degrees F Minimum Control Temperature 130 Degrees F Differential Temperature 10 Degrees F Fixed Mounting Orientation Horizontal Number of Switches 2 Burner Circuit Voltage Type Low Voltage Spud Size 3/4 in NPT Contact Form SPST Multizone Control Compatible Not Applicable Product Type High/Low Limit Controller Auto/Manual Switch Included Yes Overall Depth 2 3/4 in Overall Height 3 7/8 in