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Foreword

Thanks for purchasing a 

PIXAPRO

 product.

The wireless power-control flash trigger is designed for versatile 
use.  When  used  on 

PIXAPRO

  flashes  (with  wireless  control 

port), it is not only a flash trigger, but also incorporates multiple 
functions,  such  as,  adjusting  power  ratio,  controlling  the  on-or-
off of the buzzer and the modeling lamp or the AF-assist beam. 
The  trigger  set  consists  of  a  transmitter  (on-camera)  and  a 
receiver  (on-flash). 

PRO AC and Pro ST-I 

  series 

triggers

 

use 

 

the  PIXAPRO

 

ST-III  2.4GHz

  system 

for 

a  wide  range  of 

applications.

Contents

Foreword
For your safety
Parts

Body

Battery

Power Switch

Power-Ratio Display Mode

Channel Select Switch

Power-Control Group Selection 

Other Buttons

Using the Trigger

Adjusting Flash Settings

Wireless Triggering

Technical Data
Troubleshooting
Maintenance

For your safety

Before using this product, please read the following safety 
instructions carefully in order to ensure your safety and the 
proper operation of this product. Keep for future reference.

Failure to observe the following precautions marked by   
could result in damage

 to the product

. The  

 icon indicates 

warnings that should be read beforehand to avoid any possible 
damage or injury.

Do not disassemble or modify.

Failure to observe this precaution could result in electric shock 
or product malfunction. Should this product break open due to 
falling or other accident, take out the batteries and sent it to an 
authorized maintenance center.

Keep dry.

Do not handle with wet hands, immerse in water, or expose to 
rain. Failure to observe this precaution could cause fire or 
electric shock.

Do not use in the presence of flammable gases.

Failure to observe this precaution could result in fire or 
explosion.

Keep out of the reach of children.

This product contains small parts that may pose a choking 
hazard. Should a child swallows any part of this product, 
consult a physician immediately.

Turn off the trigger immediately should malfunction 
occur.

Should smoke or an unusual smell come from this product, 
take out the batteries immediately in case of burning and send 
this product to an authorized maintenance center. Continued 
use may result in injuries.

Summary of Contents for PRO AC

Page 1: ...T I Made In China PRO AC PRO ST I PIXAPRO LTD 50 Popes Lane Oldbury West Midlands B69 4PA Tel 0845 872 7904 Web www essentialphoto co uk E mail customerservice essentialphoto co uk Company Registration No 07601334 2 4GHz Radio Flash Triggers ...

Page 2: ...uct Keep for future reference Failure to observe the following precautions marked by could result in damage to the product The icon indicates warnings that should be read beforehand to avoid any possible damage or injury Do not disassemble or modify Failure to observe this precaution could result in electric shock or product malfunction Should this product break open due to falling or other accide...

Page 3: ...es into a fire or apply direct heat to them Do not attempt to install batteries in the reverse direction Batteries are prone to leak when fully discharged To avoid damage to the product be sure to remove the batteries if the product will not be used for extended periods of time or if the batteries are out of power Should liquid from damaged batteries come into contact with skin or clothing rinse i...

Page 4: ...p Then attach the transmitter on the camera s hotshoe or hold it in hand and set the Dial to the same grade as that of receiver s After settings the flashes will be under your command The transmitter and the receiver must be set to the same channel for wireless control Otherwise the receiver does not respond The relationship of PRO AC ST I and ST III wireless trigger system PRO AC ST I Code Switch...

Page 5: ... Will blink for sec on the LCD display Press and hold the Set button for 2 sec to switch the power ratio display mode 2 Buzz Switch BUZZ Press the Buzz Switch to turn the buzzer on or off When the buzzer is turned on will be shown on the LCD display 3 Modeling Lamp Switch AF Assist Beam Switch LAMP Press the switch to turn the modeling lamp or AF assist beam on or off When the lamp or beam is turn...

Page 6: ...exhausted If so replace with new batteries Maintenance 1 Avoid sudden drops The device may malfunction after strong shocks or impacts 2 Keep dry The device is not water proof Malfunction rust and corrosion may occur and the device may go beyond repair if immersed in water or exposed to high humidity 3 Avoid sudden temperature changes Condensation may happen if the ambient temperature changes sudde...

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