The Capacitive Proximity Switches, senses all metals and non metals and a multi turn potentiometer is to be adjusted to increase or decrease The sensitivity slowly. Feature: • Supply: 10-30 VDC • Logic: PNP / NPN / NO / NC • Sensitivity : Adjustable By Potentiometer • Grade Of Protection: Ip 67 • Enclosure: Brass Tube • Led Indication: Provided