NAMUR Ring Sensor Operating temperature range: Stock no. 328-1397 -20 to +65°C, Stock no. 328-1410 -25 to +70°C Must be used with isolation barrier interface see typically (RS stock no. 703-7043 ) IP67 Housing material PBT Prewired 2m x 2 core PVC Output configuration N/C (3mA face free, 1mA face covered)