Description:1. Compatible for all caralarm systems 2. High torque & strong electronic-motor 3. Ultrasonic soldering, water & dust proof 4. Use wires & materials with UL accreditation 5. Using plugs/socket compatible with alarm system 6. Unique design with double slide, durable & never get stuck Feature: Model: H-502 Power: DC12V 2 V Working Temperature: -30℃-+75℃ Current Consumption: 0.15A-2.22 A Endurance (updown ): more than 100, 000 times Moving Force: 30N 4 N Moving Distance: 18mm 1mm Package Included:1 X Main Control Unit 4 X Slave 4 X Metal Brackets 4 X Metal Rods 1 X Wiring Harness 2 X Screws 1 X Instruction Manual