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Canon Wireless Control For Speedlite 600EX-RT/580EX II/580EX/550EX/430EX/420EX

In Stock- Ships in 1 business day

Manufacturer # 2478A002

Our Stock # EP46744809

  • Dedicated clip-on wireless transmitter for the E-TTL and E-TTL II flash system
  • Wireless assist beam
  • E-TTL wireless auto flash control
  • High speed FP flash
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Speedlite Transmitter ST-E2 is a dedicated clip-on wireless flash transmitter. The transmitter is compatible with both E-TTL and E-TTL II flash systems. It also has a wireless assist beam function.

Dedicated clip-on transmitter for E-TTL/E-TTL II wireless flash system.

  • E-TTL Compatible
  • Built-in AF-Assist Beam
  • Sets and Controls Flash Rations
  • High-Speed FP Flash
  • E-TTL Wireless Autoflash Control



550EX-dedicated, clip-on Speedlite transmitter with direct contacts

Compatible Cameras

Type A EOS cameras (E- TTL, autoflash); Type B EOS cameras (Manual flash)

Sync Speed

High-Speed Sync (FP flash): Enabled with high-speed sync mode

Flash Exposure Confirmation

  1. Before flash fires during FE lock Adequate flash exposure indicated by the flash exposure level icon lit in the viewfinder. Insufficient flash exposure indicated by the flash exposure level icon blinking in the viewfinder. 
  2. 2. After flash fires ST-E2's flash confirmation lamp lights in green for 3 sec.

AF Assist Beam

Compatible with EOS-3's 45-point Area AF and 28mm and longer lens focal lengths
Effective Range: Approx. 0.6 to 10m/2.0 to 16.5 ft along the periphery (in total darkness).

Wireless Function

Transmission System

Infrared pulse

Transmission Range

Indoors: Approx. 12-15 m/39.4 - 49.2 ft; Outdoors: Approx. 8-10 m/ 26.2-32.8 ft

Flash Ratio Control

For A:B ratio: 1:8 to 8:1, in half- step increments or 13 steps

Flash Coverage

Transmission Coverage: +/-40 degrees horizontal and +/-30 degrees vertical

Slave Operation Confirmation

With test transmission button.
*Slave A fires followed by slave B at 1/64 output.

Slave Unit SE Mode Cancellation

Cancels when the test transmission button or FE lock botton is pressed to turn on the slave unit.


Power Source

2CR5 lithium battery x 1
Battery Life: Approx. 1,500 transmissions (At room temperature and with a new set of batteries)

SE Mode

While the power switch is set to I or HOLD, the transmission turns off automatically after about 90 sec. of non-use.


62 (W) x 51 (H) x 80 (D)mm/2.4 (W) x 3.1 (D) in


100g/3.5 oz (exluding battery)