... ,SR4P2A1B24S,SR4P2A1Y,SR2P4A24The SR4P2A1B22 and SR4P2A1B24 are appropriate for E-stop Switch,Safety Gate.The SR4P2A1B24P is appropriate ... or equipment.If periphery has strong electromagnetism noise source(for example transducer,high frequency machine and so on),the ... It has removable terminals,facilitate installation and connection. Cat. 4 Safety Relay SR4P3A1B24 for emergency stop,safety gate