High security traffic barrier of two fence Features and Functions: 1. Manual release 2. Machine core with compression spring, effectively avoids the accidents caused by spring breaking 3. Die-casting aluminum alloy motor, precision and good at thermal radiating 4. Motor cooling fan, solving the problem of heat-protection 5. Double safety limit switches (photo electricity limit switch/motor memory sensor) 6. Reversing on obstacle 7. Auto-closing 8. Supports the infrared photo cell for anti-bumping function (optional) 9. Supports the external and internal vehicle loop detector (optional) 10. Traffic light interface 11. Wire control (switch signal)/remote control (418MHz) 12. RS485 communication module (optional).