Features 1、Original standard, direct replacement for the old or broken one. 2、Made of quality ABS material, durable to use, long service life. 3、Simple to install, no modification needed, convenient for using. 4、Precision manufacturing makes it has stable performance. 5、Built to meet standard specification, strictly follow factory quality control. 6、The fan will start at the selected temperature and then switch when the engine temperature drops. Specification Condition: 100% Brand New Item Type: Thermostat Switch Material: ABS Color: As picture shown Application: Universal type, suitable for any aftermarket cooling fan Installation: To install on a hose, simply remove the top heat sink and fully insert the probe, then reinstall the hose and tighten on the capillary wire, taking special care not to damage the inside of the probe. If needed, silicone sealants can help seal. Wiring Instructions: C Terminal: 12V feed No2 Terminal: Fan power off (The switch connects to ground through the fan) No1 Terminal: Leave blank, this application does not need this You can also connect a relay if you like, but this is not required. Package List 1 x Switch Controller 1 x Control Knob 1 x Mounting Cover