The BNS303-11ZG-3M is a cylindrical coded Magnetic Switch with glass-fibre reinforced thermoplastic enclosure and 1NO/1NC contacts. The BNS303 series coded-magnet sensor is designed for use as a safety interlock switch on movable machine guards/articulating robot arms. Each sensor set consists of a multiple reed switch unit and a coded-magnet actuator. The reed switches, wired in series, will only close in the presence of their matched magnetic field array. Both switch and magnet assemblies are sealed to IP67 (submersible) standards. Suitable for food processing industry.