Features: RV keyless entry door lock, you can unlock it by password, remote controller or mechanical key, so you don't have to worry about forgetting the key. Programmable electronic password lock, supports setting 1-8-digit password, high antitheft performance, to ensure the safety of valuables in your car. Full metal housing, with zinc alloy lock core, strong and corrosion-resistant. Pull test has been done, anti-collision, will not break the lock when hit. Powered by 4 * AA battery (not included), when the battery power is too low, the lock will sound an alarm to remind you to replace the battery, ensure the motor lifespan. It is suitable for doors with a thickness of 36-40mm and a keyhole opening size of 3.75"x2.75"x1.5". Be sure to make sure it's compatible before purchasing. Specifications: Model: Right / Left(optional) Color: Black Material: Metal + Plastics Remote Controlling Distance: ≤20m Power: 4 * AA Battery(Not Included) Item Size: 228 * 155 * 108mm/ 9.0 * 6.1 * 4.3in Package Size: 240 * 170 * 150mm/ 9.4 * 6.7 * 5.9in Package Weight: 911g/ 32.1oz Packing List: 1 * Door Lock 1 * Remote Controller 2 * Mechanical Key 6 * Screw