1. Device: Single and double direction 2. Multi interface control mode: 1) dry contact: DC12V,10 mA. 2) RS485 interface. 3) Pulse voltage signal 100ms 3. Passageway: No more than 700mm 4. Dimension:1200*350*100mm 5. Power: AC220V,50HZ 6. Interface and distance: RS485, 7. Flowing Speed: A. Opening mode: 50 peoples/minutes; B. Closing mode: 30 peoples/minutes.