We have various testing machines to design correct and exact parameters for our products. All switches are performance tested. According to the manufacturing facility specifications, it matches the automobile perfectly. Replaces preceding or broken products, clear to install. Colour:Photo Color Material:BT+Copper+Electronic Version Package Contents: 1 x Refrigerator PCB Inverter Board Only the above equipment content, other item usually are not included. Note: Light reflection and assorted reveals could cause the colour of the article in the picture considerably diverse from the real thing. The size allowed error is +/- 1-3cm.