YONGNUO YN-E3-RT 2.4G 16-CH Wireless Speedlite Transmitter - Black (2 x AA)

Yongnuo Speedlite Transmitter YN-E3-RT wireless flash shooting with a signal transmitter. Can control up to five groups (15 units) with the use of radio transmission for wireless multiple flash shooting function flash. Signal transmitter also has equivalent EOS-1D series camera dust and water droplets performance. 2.4G two-way radio communications, wireless signal is fully compatible with the original ST-E3-RT / 600EXRT; 15 physical channels, an automatic channel, you can set as many as 10,000 photographers ID, professional occasions without interference; Farthest communication distance over 100 meters; Multiple YN-E3-RT can be shared using the same off-camera flash; Can display off-camera flash grouping, Call Information; Firmware upgradeable via USB port; High-resolution dot matrix LCD screen, backlit buttons; Dustproof and waterproof quick-locking mechanism; Built-in AF assist lamp, buzzer; Wireless shutter control, online shooting; ETTL / M / Multi / GR 4 flash modes; A / B / C / D / E of five flash grouping; Control up to 15 off-camera flash; Support for front -curtain sync, rear-curtain sync (M mode), high-speed sync; Support ETTL light ratio, exposure compensation, exposure lock, exposure bracketing, modeling flash; 9 Custom Functions; Settings are automatically saved