Digi-Key / CTS Offers The 291 Series Compact Optical Encoder

Technology is moving forward at a rapid pace, and Digi-Key strives to keep its customers at the forefront of this wave of innovation. Supplier Marketing Centers provide a wealth of information regarding the latest and greatest in components from more than 600 trusted Digi-Key suppliers, including Product Training Modules, datasheets, and New Product Highlights.

New Product Highlights give a brief description of the features of and applications for a new product. The latest New Product Highlight, “291 Series Optical Encoder”, can be found on the CTS Marketing Center page on the Digi-Key website. These informative resources can also be accessed from the What’s New page.

CTS offers the 291 series, a precision, long-life compact, 12-mm-size optical encoder

The 291 Series from CTS allows versatility in design applications by providing highly reliable, precise digital output and long rotational life with a non-contacting design. This product provides flexibility for resolution, power consumption, operating temperatures, and use in multiple environments. The optional momentary switch provides additional functions such as menu selection for digital displays.

The 291 Series is ideal for many applications which include, but are not limited to, the following: medical equipment, laboratory equipment, communication, industrial, HVAC, transportation, security, and professional and consumer audio and home entertainment equipment.

Features Benefits
12 mm, low-profile package (12 x 14 x 7 mm) is one of the smallest optical encoders available in the market today Precise digital signal output in a compact size
3 million cycle life with no detent or 1 million cycles with detents Long life, accuracy, and reliability
Optional Long Life momentary switch (1 million life cycles) Momentary switch can be used for reliable menu selection in digital displays
Durable metal shaft and bushing Reliability
6 and 8 PPR resolution in a 2-bit Quadrature output Variety of output options offer greater design flexibility
5 VDC or 3.3 VDC option Provides the user with low power consumption options
Dust-resistant IP50 construction
Humidity resistant (96 hours at 90% – 95% RH)
Design flexibility for challenging environments
PC terminal or cable and connector options Flexible design options
RoHS compliant Design for environmental awareness


Please contact us for additional information at 724-444-4500.

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