The YN-E3-RT Wireless Speedlite Transmitter for Canon from YongNuo is a 16 channel, 5 group wireless triggering device with a 328' range. The transmitter offers E-TTL II/E-TTL autoflash, manual flash, stroboscopic flash, auto external flash metering modes as well as 1:8 flash ratio control

Convenience features include flash exposure lock, AF beam focus assist, modeling strobe and 9 custom functions. The YN-E3-RT transmitter will run for 10 hours of continuous use on AA/LR6 alkaline batteries. A power saving function shuts the unit down after being idle for 5 minutes to conserve batteries.

Product Details:

• Brand: YongNu
• Color: Black
• Compatible with: E-TTL II, E-TTL
• 15 Channels, 5 Groups
• Range: 328'
• Frequency: 2405-2475 MHz
• AF Assist Beam
• Flash Ratio Control
• Remote Control from 1/1 to 1/128 Power
• Runs on Two AA Batteries

Specifications:

• Frequency: 2405-2475 MHz (FCC/IC); Wireless radio ID: 0000-9999
• Channels: 15 standard channels; 5 groups (A/B/C/D/E), up to 15 units
• Antenna: Internal
• Modulation System: Primary modulation: OQPSK, secondary modulation: DS-SS
• Display: High-res dot-matrix LCD, backlight for LCD keys
• Range: 328' (100 m)
• Max Sync Speed: Not specified by manufacturer; Supports 1st and 2nd curtain in M mode
• Modes: E-TTL II/E-TTL autoflash, manual flash, stroboscopic flash, auto external flash metering (in flash mode)
• Flash Control: Flash ratio control: 1:8 in 1/2-stop increments; Flash exposure compensation: +3 to -3 in 1/3 stop increments
• Confirmation LEDs: Yes
• Modeling Flash: Yes
• AF Assist beam: Yes
• Power Supply: 2x AA/LR6 alkaline batteries, NiMH batteries (not included)
• Battery Life: Power saving: powers off after 5 min. without use; Up to 10 continuous hours with AA/LR6 batteries
• Dimensions: Not specified by manufacturer
• Weight: 3.8 oz. (110 g)