[Stainless Steel Temperature Probe Sensor]: 12V Adjustable Fan Thermostat with Stainless Steel Temperature Probe Sensor. The probe measures the liquid or interface temperature and supplies power to the fan. [Temperature Control Range]: Flexible on off temperature control range 32-248°F (0-120 °C). [Installation]Probes can be installed between radiator fins or in inlet outlet pipes. Thermostat wire length is 1m/39.37inch. Highly recommend professional installation [Features] The 3 pin design allows the thermostat to be connected as a normally open or normally closed circuit. The closing temperature is always 15 degrees lower than the opening temperature. The thermostatic dial has Celsius and Fahrenheit markings. Color: Black Material: plastic+metal Package Contents: 1x Radiator Fan Thermostat Control Relay Wire Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.