Let’s review the common characteristics of Grayhill optical encoders. They have very high life ratings, typically 1 million to 300 million cycles. This is because they do not use mechanical contacts that tend to wear out over time. They are active devices that require a power source. This is typically 5 volts but Grayhill can customize the operating voltage if required. The majority are available with standard connector and cable options. They are available in sealed versions. Grayhill can customize standard products. Customizations include shaft and bushing configurations, special detent or rotational feelings, customer specified terminations and special output codes.