"The PSEN cs2.1p safety switch is fully coded and will only switch with an actuator from the PSEN cs2.1 series. The actuator must be taught and can be taught up to a maximum of 8 times but with only 1 actuator at a time.Series connection - you can connect more than 10 safety switches in sequence to Cat 4 of EN954-1. The switch reacts to a single actuator but can be taught a new actuator up to 8 times if operational damage occurs. 5 directions of actuation. M12 connection, 8-pinSupply Voltage = 24 V dcHousing Material = PlasticSeries = PSENmagSwitching Distance = 15 mmIP Rating = IP67Actuator Included = YesSensor Principle = MagneticActuator Type = CodedDepth = 40mmDimensions = 75 x 40 x 40 mm"