Bus system AS-Interface, EMERGENCY STOP button illuminated with integrated AS-i connection, 2 safe inputs / 1 non-safe LED output, operating voltage: 26.5...31.6 V DC, total current consumption from AS-i: 50 mA, M12 plug connection, emergency stop button foolproof according to EN ISO 13850, reset by pulling, AS-i interface via AS-i flat cable connection IP67, housing material: PC GF20