Contrinex diffuse photoelectric proximity switches m18 contrinex 620 200 549 a diffuse type photoelectric sensor with a detection range of 40 to 600mm and terminated by an s12 type connector the switch body has an integrated head that enable lateral light emission the diffuse type operation where the target is used as a reflector means that the switch is self contained with no external reflector or amplifier required contrinex 620 200 549