Contrinex diffuse photoelectric proximity switches m18 contrinex 620 200 547 a diffuse type photoelectric sensor with a detection range of 40 to 600mm and terminated by a 2m cable 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 620 200 547