Nascom's award winning N505AU FLIP SWITCHTM is perfect for man doors. The unique flip option allows the switch to be mounted with the cable in either direction, without loss of gap.The FLIP SWITCHTM combines the installers' choice of contact configuration with an N35 NdFeB magnet for maximum gap performance.NO DEAD SPOT? technology, in the N505AU closed loop versions, prevent false alarms caused by door misalignment.FEATURESNO DEAD SPOT? TECHNOLOGYUNIVERSAL MOUNTEXTRA WIDE GAP - N35 NdFeB RARE EARTH MAGNET36" 22AWG WIRE LEADS24" ARMORED CABLE LEAD PROTECTIONEXTRUDED ANODIZED (TYPE II) ALUMINUMFAST AND EASY INSTALLATIONLISTED TO UL634 STANDARD