Features: 1. Excellent Gear: All metal gear has high temperature resistance and strong bearing capacity, effectively protecting the main body of the gear box motor. 2. Multiple Usages: Photoelectric incremental rotary encoder, which can be used to measure the rotating speed, angle, acceleration and length of objects. 3. Stainless Steel Shaft: 6mm D type output shaft design, made of stainless steel, impact resistant, improving bearing quality and service life of gear motor. 4. Stable Operation: NPN collector open circuit output mode, and side outlet mode, which ensures stable and reliable operation, with less interference. 5. Wide Application: Used for measuring various displacement changes, such as intelligent control, full automatic fixed length leather cutting machine, competition robot, etc. Specification Item Type: Photoelectric Encoder Outer Diameter: Approx. 39mm / 1.5in Type: Solid Shaft Shaft Diameter: Approx. 6mm / 0.24in Outgoing Mode: Side Out Cable Length: Approx. 1.3 meter / 4.3ft Output Mode: NPN collector open circuit Purpose: Used to measure the rotation speed, angle, acceleration and length of objects. Package List 1 x Photoelectric Encoder