Bus system AS-Interface, active module upper part AS-i universal module, AS-i interface to FK or PG lower parts, 4 inputs, operating voltage: 26.5...31.6 V DC, total current consumption from AS-i: 200 mA, device connection via cage clamp terminals, contact pins on FK or PG lower part, housing material: PA6 GF30 V2A (1.4305)