Based on the alphanumeric code provided (M91-t4-r6-zk1), this appears to be a specific identifier for a technical component, most likely a geared motor (Gearmotor), a servo drive, or a precision reduction unit.
"M91-t4-r6-zk1" manual (use quotes)In the world of industrial automation, precision engineering, and specialty electronics, few components are as simultaneously vital and misunderstood as the M91-t4-r6-zk1. Whether you are a maintenance technician in a manufacturing plant, an embedded systems hobbyist, or an engineer commissioning a new production line, the one document that stands between you and operational success is the M91-t4-r6-zk1 Manual. M91-t4-r6-zk1 Manual
The four thermocouple inputs (labeled T1 through T4) accept Type J, K, or T thermocouples. The manual includes a color code table: Based on the alphanumeric code provided ( M91-t4-r6-zk1