Capacitive proximity sensors, CMB, CMB18-12NPPEC0SA00, Switching distance Sn: 0 mm ... 12 mm, Installation in metal: Non-flush, Electrical design: DC 4-wire, Connection type: Connector M12, 4-pin, Switching output: PNP, Switching function: Antivalent, Smart Sensor: Enhanced Sensing Basic Logic, Efficient communication, Diagnostics, Smart Task