Compact volume High precision Fast response Long service life Overload protection Short circuit protection Anti-interference design Reverse polarity protection Ce, ul, rohs certification Ip67 protection, dust-proof, vibration-proof, water-proof and oil-proof Diameter:3mm Mounting:shielded Switching distance:0.6mm Housing material:stainless steel With led/without led:with led Operating voltage:10-30vdc Ripple: