For applications with narrow space limitations. Regulates fan or blower operation and acts as high limit safety control. Summer fan switch for ventilation without changing control settings. Has same fan and limit switch mechanism. Dial has individual pointers for fan cut-in and cut-out settings.. Removable solid copper jumper between fan and limit switches. Long terminal screws for wiring ? Junctions can be made on terminal block. Slotted mounting holes for easy installation.