Remote Auto Car Keyless Entry Central Locking System—SN020 allows you to upgrade your vehicle with a convenient remote-controlled central locking system. Designed for universal compatibility with most 12V vehicles, this kit converts manual door locks into automatic keyless entry for enhanced security and ease of use. Key Features: Universal design suitable for most 12V vehicles without factory central locking Complete 4-door system with 1 master motor and 3 slave motors 360° rotatable motor head with durable, water-resistant construction Includes two remote controls for single or double door control Easy installation with supplied rods, clamps, brackets, and wiring Specifications: Power Supply: DC 12V ±3V Stretch Distance: 18 mm ±1 mm Tensile Force: 32N ±4N Module Circuit Current: Max. 81mA Endurance Life: Approx. 100,000 operations Remote Control Size: 6 × 3.4 × 0.8 cm Control Box Size: 9 × 6 × 2.5 cm Material: ABS Total Weight: Approx. 865g Package Includes: 1 × Main Control Unit 1 × Master Motor 3 × Slave Motors 4 × Metal Brackets 4 × Metal Rods 2 × Remote Controls 1 × Wiring Harness Set 1 × Installation Hardware Set 1 × Instruction Manual