Check the listing for details. Qty. 5: NEW US Digital/S-Cubed EM1-1-500-I 1" Index Optical Encoder Module HEDS. Condition: New – Open box. Listed at 136.73 USD. Quantity 5: NEW US Digital/S-Cubed EM1-1-500-I 1" Index Optical Encoder Module Comes with what you see in the pictures. If you don't see it, you probably won't get it. Specifications are from US Digital and may vary slightly due to upgrades, options, or revisions this unit may or may not have. These encoders are from a spare parts room at a semiconductor fab that closed. Breakdown by Model Number: Series: EM1 Native OD: 1" Native LPI/CPR: 500 Index: Yes EM1 Featuers: Two-channel quadrature with optional index. Improved replacement for HEDS-9000 Series Single 5 VDC supply 500 CPR Resolution Internal decoupling capacitor Sink/source 8 mA outputs Description: The EM1 is a transmissive optical encoder module designed to be an improved replacement for the HEDS-9000 series encoder module. This module is designed to detect rotary position when used with an encoder disk. The EM1 consists of a lensed LED source and a monolithic detector IC enclosed in a small polymer package. The EM1 uses phased array detector technology to provide superior performance and greater tolerances over traditional aperture mask-type encoders. The EM1 provides digital A & B quadrature outputs with an optional third output index channel. Each EM1 module is resolution-specific matched to the resolution of an encoder disk. The EM1 operates with a single 5 V supply and provides single-ended outputs capable of sinking and sourcing 8 mA. An internal 0.1 µF decoupling capacitor is designed into the EM1 to provide enhanced noise immunity over the HEDS-9000 series encoder modules. For Domestic Customers: Packaging, handling, and order processing included in shipping in all domestic shipments as quoted by the shipping calculator. For International Customers there is a $0.00 minimum for packaging, handling, and order processing. International shipping to be determined by destination. Prior to shipment I will need to know the following information (filled out on a form that I will send you) for International Customers or Packages/Freight being Forwarded internationally. International customers may also be subject to a freight forwarder form if applicable.: (1) Are you the end-user of this item? (2) If you are not the ultimate end-user of the item, please state the ultimate end user's name. (3) What is the ultimate country destination? 11/25/23