Unique design with double slide, anit-block and durable Convenient to install Key or door-button operation High torque and powerful motor Using plug/socket compatible with alarm system and remote control kit Compatible with various cars and alarms system System of control: negative ground Ultrasonic welding, water and dust resistant Technical data: Voltage: 12V DC ± 2V Working current: ≤ 3.5A Push/pull force: ≥ 4.0Kg Expected life: ≥ 100,000 cycle life Travel distance: 18 ± 1mm Working temperature: -30 to +65degrees Celsius