Product Description Detailed Specs Downloads Reviews/Questions Product Description PX4i PX6i, SLOTTED OPTICAL SENSOR HL PX Detailed Specs Product Family PX4i, PX6i MFG Part Number 1-974006-020 Product Type Accessory null null null null null null null null null null Downloads Warranties Warranties Reviews/Questions The Honeywell 1-974006-020 is also known as HON -1974006020 or 1974006020