104'F-230'F digitally adjustable electric fan thermostat switch wiring kit. 1/8 inch NPT thread-in brass temperature sensor threads into port. 40 amp relay harness with 14AWG wire powers up to 2 electric fans. This fan switch kit is compatible with either 12 or 24 volt applications. Maximum 30 amp continuous draw with 30 amp in-line fuse per fan. A/C override or manual toggle switch wire built directly into harness. Optional second fan starts 10 seconds after first fan begins cooling.