... more then ten years10 reader induction distance:>2-10cm(depends on card reader)11 read signer communication distance: ... door long time unclosed, force open alarm, illegal card alarm, duress alarm functions (if not connected ... three modes, one mode is open,(not need card , the door keeps open statement). The second ... is close.( the door keeps close, the card invalid),the third mode is normal.( the door ...