Schmersal AZ17 Safety Interlock Switch, 1NC/1NO, Keyed, Glass Fibre Reinforced Thermoplastic, Maximum AC Voltage: 230V, Maximum DC Voltage: 24V, Connection Type: M16, IP Rating: IP67, Dimensions: 85 x 30 x 30mm, Length: 85mm, Maximum Current: 4A, MPN: AZ 17-11ZRK.