FCC ID: 2ACYPYN-E3-RT SHENZHEN YONGNUO PHOTOGRAPHIC EQUIPMENT CO., LTD Model name: Speedlite Transmitter Model No.: YN-E3-RT This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.