Type: 4 Pin Reliable Protection: This PTC relay provides reliable overload protection for your refrigerator, ensuring the safety of your appliance.If your compressor is not starting, But burning hot and "click-" about every 3-5 minutes when powered on. it may be the problem caused by the relay. You can order this 4pin relay and try to fix it. Money-saving: Easily solve and repair common problems of small refrigerators, wine cabinets, and cold drink cabinets . Before you decide to your freeze or fridge do some research, you could save tons of money. Easy Installation: With its user-friendly design, this refrigerator compressor relay can be easily installed without any special tools. Color: White Material: Plastic+Metal Package Contents: 2 x Over Load Protector Relay 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.