Brand: Painless Performance Manufacturer's Part Number: 30129 Part Type: Fan Switches Product Line: Painless Performance Waterproof Electric Fan Relay Kits Summit Racing Part Number: PRF-30129 UPC: 749823301290 Thermal Switch Style: Fan control kit Sending Unit Style: Thread-in Sending Unit Included: Yes Sending Unit Thread Size: 3/8 in. NPT Fan Quantity: Single Fan On Temperature (degrees F): 185 degrees F Fan Off Temperature (degrees F): 170 degrees F Relay Included: Yes Wiring Harness Included: Yes Manual Override Switch Included: No Air Conditioning Relay Included: No Quantity: Sold as a kit. Painless Performance Waterproof Electric Fan Relay Kits Painless Performance waterproof electric fan relay kits are designed as inexpensive protection for your electric fans. These kits provide constant voltage， protection from voltage and amperage spikes， and keep fan(s) from feeding back through the system. Painless fan relay kits are a necessity if you're adding an on/off switch to your electric fan circuit.