1 relay output with 1 changeover contact. WE 77/Ex-1 115V. The transformer isolated barrier transfers digital signals into hazardous. The transformer isolated barrier transfers digital signals into hazardous areas. Sensors per DIN EN 60947-5-6. (NAMUR) or mechanical contacts may be used as This device is a dual channel, galvanically isolated intrinsic safety berrier that transfers discrete signals (NAMUR sensors/. The transformer isolated barrier transfers digital signals into hazardous areas. Sensors per EN 60947-5-6. (NAMUR) or mechanical contacts may be used as 99,9999 manually or external 7-segment LED display, red 6 digit height 8 mm 10 ms 107 switching cycles Transfer characteristics Switching frequencyThe transformer isolated barrier transfers digital signals into hazardous areas. Sensors per EN 60947-5-6. (NAMUR) or mechanical contacts may be used as Rated values, acc. to EN 60947-5-6 (NAMUR), see manual for electrical data. Open circuit voltage/short-circuit current, approx. 8 V DC / approx. 8 mA.