The main parameters: Operation Temperature: -40 to 60 Operation Pressure: 90-125 psi Operation Voltage: DC12V or DC24V Life Cycle: 1, 000, 000 Door closing or opening time: 3-5 seconds Style: Single or Double Slide Glide 1. We have past ISO 9001-2000 certifications and ISO/ TS16949: 2000 certifications 2. Auto-operation, Emergency release, Sensitive edge 3. We still have electrical swing in bus door at your choice.