Evaluation systems, power supplies, MONITOR, terminal rail housing, nominal voltage: 110...240 V AC (50...60 Hz) / 27 V DC (typ. 24 V DC), double-chamber box terminals 2 x 2.5 mm (2 x AWG 14), 2 relay outputs, 2 transistor outputs, analog output, 0/4...20 mA, programmable, test function without external frequency, key function, housing material: plastic