1. **Easy Replacement**: It is quite convenient to replace the old parts of the refrigerator. All sets come with white carton outer packaging for protection. 2. **Compatible Models**: Suitable for many refrigerators on the market that use 1 - pin QP2 4.7 - ohm resistors. The refrigerator overload protector can help prevent the refrigerator compressor from overheating. The replaceable part numbers include AP4439459, 1357963, AH3529540, EA3529595, PS325, etc. 3. **PTC Relay**: A general - purpose relay suitable for various small refrigerators and refrigerators, which can save time and effort. This product is only compatible with QP2 - 4.7 single - end relays. 4. **Simple Installation and Replacement, Wide Application**: It can be directly and easily installed and replaced, enabling the refrigerator to operate normally and deliver cold air. It can repair small refrigerators, compact refrigerators, beverage and wine/beer refrigerators, chest freezers, deep - freezers, wine/beer refrigerators, etc. 5. **Material Features**: The QP2 - 4.7 starting relay is made of plastic, which is rust - proof. It has stable performance and relatively high reliability, suitable for long - term use. 6. **Product Material and Color**: The material is plastic and the color is black. 7. **Packaging Content**: It includes 2 x 2 x 1/2 protectors. Only the above packaging contents are included, and other items are not included. 8. **Precautions**: Light and different displays may cause the color of the item to vary slightly from the actual object. The allowable measurement error is +/- 1 - 3 cm.