Robust design with AISI316 stainless steel finish. Pass direction indication function. LED lights indicate whether or not it is allowed. Multiple modes of operation: controlled entry-free exit, controlled entry-exit ... LCD screen: to directly display the description with text of the operations of the flap (inner plate). Initial Self-Tests Function: This function is included for ease of use and maintenance (inner plate). Anti-closing function: This function prevents people from being trapped between the flaps at the end of the set opening time.