BENTLY NEVADA Proximitor Sensor 3300 series part # 330100-50-05 5mm & 8mm 24VDC I listed this as used but could very well be new, old stock, warehouse abuse. I purchased this at auction and don’t know the history of it. Screw contacting has never been loosened or tightened, cap still on threaded port. It is missing one plastic mounting tab. I guarantee this to work or a full refund with free return shipping. Open box, No packaging.Free Same Day Shipping!