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Power Output Control

select dial (14) decides different power output, satisfying light requirements in 
different environment. The power is adjustable freely from 1/32 to 1/1 which will 
be accordingly shown on the LCD display (10). "--" on the display indicates that 
the flash triggering function is turned off. Press the Test button to discharge 
power when the flash output is adjusted from high to low.

Test Button

To fire the flash without taking a picture, press the test button (4). It can also help 
adjust the flash brightness when combined with the select dial (14). Press the 
SET button and turn on the flash to view its version.

Sync Triggering

The sync cord jack (2) is a Φ6.35mm 
plug. Insert a trigger plug here and 
the flash will be fired synchronously 
with the camera shutter.

GR/CH Button

Short press the GR/CH button can 
adjust the built-in wireless group. When the group indicator on the LCD panel is 
blinking, turn the select dial to change. And long press the GR/CH button can 
adjust the built-in wireless channel. When the channel indicator on the LCD panel 
is blinking, turn the select dial to change.

Slave Trigger Model

Three slave triggering models are available and can be set by pressing slave 
model button (6).

No optical control: S1 or S2 is not displayed on the LCD panel, indicating the 

slave triggering function is shut down.

One fire model: S1 is displayed on the LCD panel, indicating the flash will fire 

synchronously when receiving one external flash. In this model, the flash can 
function as an auxiliary lamp, offering various effects of light and shadow.

Anti-preflash model: S2 is displayed on the LCD panel, indicating the flash will 

receive two external flashes within 2 seconds and will fire synchronously when 
receiving the second flash. In this model, the flash can function as an auxiliary 
lamp, applicable to TTL system. With this anti-preflash function, the flash can 
synchronize with cameras having a one-preflash firing system.

Buzz Function

The sound button (8) is used for deciding whether there is sound reminder for 
ready flash after recharging. When the buzz indicator is on the LCD panel, the 
buzz function is working; when it is disappear, the buzz function is not working. A 
“BI” sound will be heard when it’s fully charged.

Key Combination

Synchronously press the GR/CH button and the S1/S2 button can turn on/off the 
built-in wireless transmission. If there are no wireless and channel indicators 
displayed on the LCD panel, the built-in wireless transmission is off. On the 
contrary, the built-in wireless transmission is on. Synchronously press the S1/S2 
button and BUZZ button to recover factory settings.

Alarm Display

E0   The temperature sensor is not connected.
E1   When charging, the capacitance and voltage are not rising within 1 second.

 

E2   The fastest heating-up component is over the extra temperature.

E3   Discharged capacitance and voltage

10%

Alarm sounds, BIBI, ringing per 0.5 second. Press SET button to stop alarming.

Memory Function

The device is equipped with memory function for the panel setting. It will help 
remember the panel setting 3 seconds after you set it. When starting up the flash 
next time, the panel setting will be the same as that before powering it off.

Wireless Control Function

The flash unit has built-in 2.4G wireless transmission, which can be used 
together with 

ST-III

 and 

PRO AC 2.4GHz

 flash trigger.

The flash unit is built in with a Wireless Control Port (9) so that you can 

wirelessly control the on-and-off of your flash, modeling lamp and buzzer, as well 
as adjust the flash output level, etc. 

To control the flash wirelessly, you need a 

PIXAPRO

 

PRO AC

 series remote 

control set (on-camera and on-flash). Insert its receive end into the Wireless 
Control Port (9) on the flash and insert the transmit end into the camera hot 
shoe. Settings made on the hotshoe-mounted transmit and receive ends will be 
wirelessly communicated to the flash. Then you can press the camera shutter-
release button to trigger the flash. 

For full instructions on the use of 

PRO AC

 series remote control, see its user 

manual.

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