An R ID is the authorization ID assigned by the Korean Communications Commission to identify wireless products in the Korean market. The R assigns application ID numbers and Authorization number to approved products. The HDMI long range transmitter, manufactured by KRAMER ELECTRONICS LTD. and sold by Korea Cramer Electronics Co., Ltd. has an Authorization Number of R-REI-KRK-PT-571 and was approved on 2018-01-12 under application number 201817210000012604.