This 190F-on/175F-off electric fan control kit includes the 1/8″ NPT threaded switch, 1/8″ x 3/8″ NPT adapter bushing and a relay wire harness to make it an easy installation. Maximum capacity on this kit is 25 amps. Features Turn-off temperature is preset at 175F Fits into either a 3/8″ NPT or 1/8″ NPT port Single stage fan control thermostat with 190F turn-on temperature Applications Universal What’s in the box? 3/8″ NPT x 1/8″ NPT bushing 40/60 amp relay wire harness with AC override Warranty MFGR. Limited Warranty Instructions Relay Instructions