... other protective equipment to protect the workers.4.Detailed introduction(1)Characteristic:The installation and adjustment are convenient,the wiring is ... 3)Standard configuration:Emitter/1,Receiver/1,N type controller/1,Signal cable 3m/1 root, 5m/1 root ,Installation fittings/1 set;It is allowed ... the special explanation should be made on order; Cost-effective safety device,light barrier sensor SNB3230