Canon SPEEDLITE EL-1 Advanced User's Manual page 18

Radio Transmission Wireless Shooting / Optical Transmission
Wireless Shooting (
Sender unit(s)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(1) <
<
(2) < > Radio transmission wireless
< > Optical transmission wireless
(3) Flash mode
<
< > Manual flash
<
< > Group firing*
(4) < > Sender flash firing ON
< > Sender flash firing OFF
(5) Firing group control
(6) < > Transmission channel
< > Transmission channel automatic setting*
(7) Wireless radio ID*
(8) <
(9) < > Synchronization speed warning*
(10) < > Receiver charging completed*
(11) Flash ratio
* 1: < > Radio transmission wireless only
/ )
> Sender setting
> Sub sender setting*
> E-TTL II / E-TTL autoflash
> Stroboscopic flash
1
1
> Sender / receiver charge indicator
1
1
1
1
18
(8)
(9)
(10)
(11)