Capacitive Proximity Sensors

 Eaton / Cutler Hammer E53KAL18A2E Threaded Body Unshielded Capacitive Proximity Sensor; 300 Milli-Amp, 20 - 250 Volt AC, 15 mm Sensing Distance, 2 Wire, AC Output  

 Eaton / Cutler Hammer E53KBL18A2 Threaded Body Shielded Capacitive Proximity Sensor; 300 Milli-Amp, 20 - 250 Volt AC, 8 mm Sensing Distance, 2 Wire, Output  

 Cutler Hammer E53KAL30T111SD Threaded Capacitive Proximity Sensor, 10 - 30 VDC, 300 mA, 4-Pin