Master model, series connection master for up to 3 subscribers, 30 mm, 40 mm, 50 mm, 70 mm, 150 mm detection capacity, muting, partial muting, override, EDM, restart applications according to EN ISO 61496-3, vertical applications, reference marks, measurement data output (UDP), quick exchange, exchangeable memory block, window exchangeable, ROS & C++ interface available, -10°C ... +50°C, 5.5 m safety zone, extended connection options (I/O), 3 safety zones in parallel, 3 warning zones in parallel, 70 configurable zone sets.