Ⅰ. 12V 500A Winch Control Solenoid Relay Contactor with Wireless Winch Remote Control Kit Ⅱ. Specification: Ⅲ. Voltage: 12V Ⅳ. Current: 500A Ⅴ. Size: 99.8mm/3.93in x 55.2mm/2.17in x 86.6mm/3.41in (L x W x H) Ⅵ. Quantity: 1 Set Ⅶ. Application: Suitable for any 12V electric recuperator winch Ⅷ. Red line: positive battery Ⅸ. Black line: negative battery Ⅹ. Blue line: antenna Ⅺ. White line: control line Ⅻ. Yellow line: control line XIII. Feature: XIV. The wireless communication range is approximately 100 feet. XV. The contactor is a highly resistant sealed type, the wireless remote controls are 2.4 Warrior Digital. XVI. For SUVs and Recovery trucks, allows you to sit back or sit in the car without any restrictions caused by wired phones. XVII. The remote control comes with a wiring diagram. XVIII. This item does not include a battery!!! XIX. Note: XX. We provide clear photos with measurements where possible. Please check as much as possible to make sure the item is the one you need. XXI. The actual item may be slightly different from the listing image due to different computer screens, thanks for your understanding. XXII. The item size is measured by hand, please allow 0.5-1 inch difference. (1 inch=2.54 cm) XXIII. Professional installation is highly recommended！ XXIV. The product cannot be reverse-wired. XXV. The package includes: XXVI. 1 x receiver XXVII. 2 x wireless remote controls XXVIII. 1 x winch solenoid XXIX. 6x caps XXX. The wireless range is approximately 100 feet. XXXI. The contactor is a rugged type, sealed type, the wireless remote controls are 2.4 Warrior Digital XXXII. For SUVs and trucks, allowing you to stand up, lean back or sit in your car without any of the restrictions caused by wired phones. XXXIII. Your remote control comes with a wiring diagram. XXXIV. This item does not include a battery