Sumtak IP-108S103R Rotary Encoder

Sumtak IP-108S103R, also cataloged as IP-1085103R (9405-0340), is an OPTCODER optical rotary encoder from Sumtak. Marketed in listings as "OPTCODER ROTARY ENCODER" with the suffix EH and an "8C/R" reference in some sources, this device sits in Sumtak's OPTCODER family of optical feedback encoders used for precise rotary position signals in automation equipment. Sumtak's encoder lineage sits under HEIDENHAIN, with manufacturing historically centered in Japan and a catalog that includes OPTCODER and ROD series designed for motion feedback in industrial machines. The IP-108S103R and IP-1085103R identifiers appear together in multiple online listings, underscoring their shared identity within Sumtak's product lineup.