Godox XProS Wireless Flash Trigger Transmitter Instruction Manual

June 15, 2024
Godox

XProS Wireless Flash Trigger Transmitter
Instruction Manual

Foreword

Thanks for your purchase of this XProS wireless flash trigger.
This wireless flash trigger is suitable for using Sony cameras to control Godox flashes with X system e.g. camera flash, outdoor flash, and studio flash. It can also control Sony original speedlights with the coordination of X1R-S receiver. Featuring multi- channel triggering, stable signal transmission, and sensitive reaction, it gives photographers unparalleled flexibility and control over their strobist setups. The flash trigger applies to hotshoe-mounted Sony series cameras, as well as the cameras which have PC sync sockets.
With XProS wireless flash trigger, high speed synchronization is available for most of camera flashes in the market which support TTL. The max flash synchronization speed is up to 1/8000s .
: 1/8000s is achievable when the camera has a max camera shutter speed of 1/8000s.

Warning

Do not disassemble. Should repairs become necessary, tis product must be sent to an authorized maintenance center.
Aways keep this product dry. Do not use in rain or in damp conditions.
Keep out of reach of children.
Do not use the flash unit in the presence of flammable gas. In certain circumstance, please pay attention to the relevant warnings.
Do not leave or store the product if the ambient temperature reads over 50°C..
Turn off the flash trigger immediately in the event of malfunction, Observe precautions when handiing batteries

  • Use only batteries listed in this manual. Do not use old and new batteries or batteries of different types at the same time.
  • Read and follow all warnings and instructions provided by the manufacturer.
  • Batteries cannot be short-circuited or disassembled.
  • Do not put batteries into a fire or apply direct heat to them.
  • Do not attempt to insert batteries upside down o backwards.
  • Batteries are prone to leakage when fully discharged. To avoid damage to the product, be sure to remove batteries when the product is not used for a long time or when batteries run out of charge.
  • Should liquid from the batteries come into contact with skin or clothing, rinse immediately with fresh water.

Names of Parts

  • BodyGodox XProS Wireless Flash Trigger Transmitter - name of parts
  • LCD PanelGodox XProS Wireless Flash Trigger Transmitter - lcd panel1. Channel (32)
    2. Camera Connection
    3. Modeling Lamp Master Control
    4.High-Speed
    5.Sound
    6. Battery Level Indication
    7. Group
    8. Mode
    9. Power
    10. Group’s Modeling Lamp
    11. ZOOM Value 12. loons of Function Button
    13.CFnMenu
    14, Version

Battery

AA alkaline batteries are recommended.

  • Installing Batteries
    As shown in the ilustration, siide the batery compartment i of the flash trigger and insert two A batteries separately.

  • Battery Level Indication
    Check the battery level indication on the LCD panel 1o see the remaining battery level during the usage.

Battery Level Indication Meaning
3 grids Full
2 grids Middle
1 grid Low
Blank grid Low battery, please replace it.
Blinking < 2.5V The battery level is going

to be used out immediately (please
replace new batteries, as low power
leads to no flash or flash missing in
case of long distance).

Using the Flash Trigger

  1. AsaWireless Camera Flash Trigger
    Take TT685S as an example:
    1.1 Tum off the camera and mount the transmitter on camera hotshoe. Then, power on the flash trigger and the camera.
    1.2 Long press the <Zm/CH> button to set channel, group, mode and parameters (refers o the contents of *Setiing the Flash Trigger’).
    1.3 Tum on the camera flash, press the < ,> wireless setting button and the < ( ) > wireless icon and slave uniticon will be displayed on the LCD panel. Press the bution to set the same channel to the flash trigger, and press the button o set the same group to the flash trigger (Note: please refer o the relevant instruction manual ‘when seting the camera flashes of ofher models). 1.4 Press the camera shutter to trigger and the status lamp of the flash trigger tums red synchronously.

  2. As a Wireless Outdoor Flash Trigger
    Take ADBOOB as an example:
    2.1Tum of the camera and mount the ransitter on camera hofshoe. Then, power on the flash trigger and the camera
    2.2Long press the <Zm/CH> button to set channel, group, mode and parameters (refers to the contents of “Setting the Flash Trigger’), 2.3 Power on the outdoor flash and press the < > wireless selting button and the < ( ) > wireless icon wilbe displayed on the LCD panel. Long press the buton to set the same channel theflash trigger, and short press the < GRICH> button to set the same group to the flash trigger (Note: please refer to the relevant instruction manual when setting the oudoor flashes of other models).
    2.4 Press the camera shutter o trigger and the status lamp of the flash trigger tums red synchronously.

  3. As a Wireless Original Flash Trigger
    Take HVL-FASRM as an example:
    3.1 Tum off the camera and mount the transmitter on camera hotshoe. Then, power on the flash rigger and the camera.
    3.2 Long press the <Zm/CH> button to set channel, group, mode and parameters (refers to the contents of “Setting the Flash Trigger’). 3.3 Attach the original flash to the X1R-S receiver.
    Press the button on the receiver to set the same channel to the flash trigger, and press the button to set the same group to the flash trigger (Note: please refer to the relevant instruction manual when setting the original camera flashes),
    3.4 Press the camera shutter to trigger. And the.
    status lamp of the camera flash and the flash trigger both turn red synchronously
    Nota: Sony oriinal speedighs shall be set o TTL mode regardless of XProS’s mode.

  4. As a Wireless Studio Flash Trigger
    Take GS400I as an example: 4.4 Tum offthe camera and mount the transmiter on camera hotshoe. Then, power on the flash rigger and the camera.
    Long press the <Zm/CH> button (o set channel, group, mode and paramelers (refers 1othe contents of *Setting the Flash Trigger’).
    4.3 Connect the studio flash to power source and power it on. Synchronausly press down the button and <§1/S2>button and the < (4) > wireless icon will be displayed on the LGD panel. Long press the buton o 56t the same channel 1o the flash trigger, and short press the < GRICH > button to set the same group to the flash trigger (Note: please refer o the relevant instruction manual when seting the studio lashes of other models).
    Press the camera shutter o trigger. And the status lamp of the camera flash and the flash rigger both turn red synchronously.
    Note : s the studio flash’s minimum output vaue is 1/32, output vauo o the flastrggar shoud be sat 0 0rover 1132, A the sucioflash do not nava TTL and soboscapic unctons, he flash iggar shoud be sat  mode trgerng

  5. As a Wireless Shutter Release Trigger
    Operaion method
    5.1 Tum of e carmers. Teke a camera remots cable nd nsert one end o the cameras shuter socket and th othe ond o the ahute elease prtof X1R.S o connect Power onthe camera and thereceiver
    5.2 Long pross the buton  channel,group, mode and parameters (rferst he contnts of “Seting he FiashTrigger).
    5.3 Pros tho ecoier’ buton o s thesame channel o the flash tiggor, and press he bton {0 set e same group o th fah trigger.
    5.4 Holfpross the button fo focus and full press he <TEST button o shool Reloase i buton unil the status lamp urs to Red.

  6. As a Flash Trigger with 2.5mm Sync Cord Jack
    Operation method:
    6.1 The connection method please refes to the contents of *As a Wirless Studio Flash Trigger” and “As a Wireless Shutter Release
    6.2 Pross ho shutr normaly and the fashes wil e conroNed by syne cord jeck’s signa

  • Power Switch
    Side the Power Switch to ON, and the device is on and status indicator lamp will not reveal
    Note : In order to avoid power consumption, turn off the transmitter when not n use.

Automatically Enter Power Saving Mode

  1. The system will automatically enter standby mode after stop operating the transmitter over 90 seconds. And the displays on the LCD panel disappear now.
  2. Press any button to wake up. If the flash trigger is attached to the hot shoe of Sony camera, half press the camera shutter can also wake the system up.
    Note : If do not want to enter power saving mode, press the button to enter C.Fn custom settings and set STBY to OFF.

Setting the Flash Trigger

  • Power Switch of AF Assist Beam
    Slide the AF assist beam switch to ON: the red AF-assist lamp will light when it’s hard to focus while automatically off when getting correct focus.
    Note : XProS’s AF-assist lamp will not light when not being attached to camera.
  • When using on Interchangeable Lens Digital Camera (e.g. ILCE6000L and a7RIl), XProS’s AF-assist lamp will not light.
  • When using on DSLR Camera (e.g. a99 and a77II) , XProS’s AF-assist lamp will automatically light.

Channel Setting

  1. Long press the <Zm/CH> button and the channel value will be chosen.
  2. Turn the select dial to choose the appropriate channel. Press the button again to confirm the setting.
  3. This flash trigger contains 32 channels which can be changed from 1 to 32. Set the transmitter and the receiver to the same channel before usage.
  • Wireless ID Settings
    Change the wireless channels and wireless ID to avoid interference for it can only be riggered after the wireless IDs and channels of the master unit and the slave unit are.
    set to the same.
    Press the button 1o enter C.Fn ID. Press the button to choose OFF channel expansion shutdown, and choose any figure from 01 to 99.

Mode Setting

  1. Short press the button, and the mode of the current group will change.

  2. Set the groups to five groups (A-E)
    2.1 When displaying multiple groups, press the button to switch the multi-group mode to MULTI mode. Press the group selection button can set the MULTI mode to ON or OFF. 2.2 When displaying multiple groups, press the group selection button or button in one-group mode, and A, B and C group’s mode will be changed by the order of TTL/M/– while D and E group will be changed in or M/– mode.

  3. When setting the group to 16 groups (0-F), there is only manual mode M.

  4. Long press the button for 2 seconds until “LOCKED?” is displayed on the bottom of the LCD panel, which means the screen is locked and no parameters can be set. Long press the button again to unlock.Godox XProS Wireless Flash Trigger Transmitter - button2

  • Magnification Function
    ‘Switch between muli-group and one-group mode: choose a group in mulli-group mode and press the button to magnify it to one-group mode. Then, press the bution to back to mult-group.

  • Output Value Settings
    1. Multigroup displays in the M mode
    1.1 Pressthe group buton to hoose the group, tu the seect dial, and the power output vlue willchange from Minto 1111 0.3 or 0.1 top incremerts. Press the

    button o confim the seing 1.2 Press button to choose all groups’ power output value, turn the select il and al groups’ power output value il change from Wi to /1 in 0.3 or 0.1 stop incremers. Pross button again to confim the seting 2\. One-group displays inthe M mode Turn the seect dial and the group’s power output vlue will change from Min o 1/1 n0.3 0 0.1 stop increments. Notes Min. refers to the minimum value thatcan be set in M or Mul made. The minimum value can be Setto 11128, 1/128(0.1), 11258 or 1/256(0.1) according o C.Fr-STEP. For mostof camera flashes, the minimum output value s 1/128 or 1/125(0.1) and cannot b sat o 11256 or 1256(0.1). However, the. Value can change to 11256 or 1256(0.1) when using in combination with Godox strong powr flashos.e. gADBOOPO, etc
  • Flash Exposure Compensation Settings
    1. Multigroup displays in the TTL mode
    1.1 Press the group button to choose the group, turn the select dial, and the FEC value wil change from -3 10 ~3 in 0.3 stop increments. Press the bution to confirm the setting
    1.2 Press button to choose all groups’ FEC value, tum the select dial, and all groups’ FEC value will change from -3 to =3 in 0.3 stop increments. Press.

    button again to confirm the setting 2\. One-group displays in the TTL mode Tum the select dial and the group’s power output value will change from -3 to ~3 in 0.3 stop increments. Note: The FEC valus displyect on the XoroS wi ot be displayec o th fah under s contol. A the FEC valugs of XproS and fash ara two dferent value, the output valbe aro th tota FEC vlue of XoroS and fash(fr exampl, XProS’s FEC valu s 2 whil ho flash’s FEC valu s +3, then the flash ouut s +1),
  • Multi Flash Settings (Output Value, Times and Frequency)
    1. In the multi flash (TTL and M icon are not displayed).
    2. The three lines are separately displayed as power output value, Times(flash times) and Hz (flash frequency).
    3. Tur the Select Dial to change the power output value from Min. to 1/4 in integer stops.
    4. Short press the Times button can change flash times.
    Tur the select dial to change the setting value. 5. Shortpress the THz button can change flash frequency. Turn the select dial to change the setting value.
    6. Uniil all the amounts are set. Or during any value setting, short press the button to exitthe setting status. No values wil blink.
    7. Inthe mult flash setting submenu, short press the bution to retur to main menu when no values are blinking,
    Note: As flash tmes are rostricted by flash output value and flash raquency, the flash imes cannot supass the upper value that permied by the system. The times that transported o th recolver end are areal flash time, which s also relate 0 the camera’s shuter seting.

  • Modelmg Lamp Settings
    1. When displaying multiple groups, press the button to control the ON/OFF of the modeling lamp.
    2. Press the group button to choose the group when displaying multple groups or when displaying one- group, press the button to control the.
    ONIOFF of the modeling lamp (note: The models that can use one-group to ONIOFF the modeling lamp are as follows: GSlI, SKIl, QSlI, QDII, DEIL, DPII series, etc. The outdoor flash AD200 and ADB0D can use this function after upgrade. The new arrivals with modeling lamps can also use this function.).

  • ZOOM Value Settings
    Short press the <Zm/CH> button and the ZOOM value willbe displayed on the LCD panel. Choose the group and tum the sefect dial, and the ZOOM value will change from AUTO/24 to 200. Ghoose the desired value and press the <Zm/CH> buton again to back to the main menu.
    Note: Th flash’s ZOOM should be set to Auto () mode before esponcing.

  • Shutler Sync Settings
    1. High-speed sync: press the button and is displayed on the LCD panel. Press the MENU or shortcut Fn on Sony camera to enter Flash Mode and choose Fill-flash . Then, set the camera shutter.
    2. Second-curtain sync: press the MENU or shortcut Fn on Sony camera to enter Flash Mode and choose REAR flash . Then, set the camera shutter.

  • Buzz Settings
    Press the

    button to enter C.Fn BEEP and press the button. Choose ON to turn on the BEEP while OFF to turn off it. Press the button again to back to the main menu.

  • Sync Socket Settings
    1. Press the

    button to enter C.Fn SYNC and  press the button to choose IN or OUT.
    Press the button again to back to the main menu.
    1.1 When choosing IN, this syne socket will enable OUT XProS to trigger flash.
    1.2 When choosing OUT, this sync socket will send trigger signals to trigger other remote control and flash.

  • TCM Function
    TCM transform function is a particular out a ont a function that owned by Godox: TTL  flash value transform into power output value in M mode.
    1.1 Set the flash trigger to TTL mode and attach it to the camera. Press the shutter for shooting.Godox XProS Wireless Flash Trigger Transmitter -
TCM1.2 Long press the button, and the flash value in TTL mode will transform into power output value in M mode (The displayed minimum value is the set Min. value).
    1.3 Please refer to the C.Fn setting custom functions to see the flash models which are compatible with TCM functions.
    Note : Please choose the relevant models in TCM function in C.Fn custom settings according to your own flash.

  • SHOOT Function Settings
    Press the

    button to enter C.Fn SHOOT.
    Press the button to choose one-shool or multi- shoots, and press the

    button again to back to the main menu. One-shoot: When shooting, choose one-shoot. In the M and Mutti mode, the master unit oy sends riggering signals to the slave unit, which is suitable for one person photography for the advantage of power saving **Multi-shoots** : When shooting, choose multi-shools, and the master unitwill send parameters and triggering signals to the slave unit, which is suitable for mult person photography. However, this function Gonsumes power quickly. **APP** : Only send triggering signal when camera is shooling (control the flash’s parameters by smartphone APP).
  • C.Fn: Setting Custom Functions
    ‘The following table lsts the available and unavailable custom functions of this flash.

Custom Function| Function| Setting Signs| Settings and Description
---|---|---|---
STBY| Sleep| ON| ON
OFF| OFF
BEEP| Beeper| ON| ON
OFF| OFF
STEP| Power output value| 1/128| The minimum output is 1/128 (change in 0.3 step)
1/256| The minimum output is 1/256 (change in 0.3 step)
1/128 (0.1)| The minimum output is 1/128 (change in 0.1 step)
1/256 (0.1)| The minimum output is 1/256 (change in 0.1 step)
LIGHT| Backlighting time| 12sec| Off in 12 seconds
OFF| Always off
ON| Always lighting
SYNC| Sync cord jack| IN| Enable XProS to trigger flash
OUT| Export triggering signal to trigger other remote control and flash
GROUP| Group| 5 (A-E)| 5 groups (A-E)
16 (0—F)| 16 groups (0-F); 16 groups when the receiver end is studio flash, which can only be set to M mode in this state
LCD| Contrast ratio of LCD panel| —3—+3| The contrast ration can be set as integral number from -3 to +3
SHOOT| | One-shoot| Only send triggering signals in the M & Multi mode when camera is shooting
---|---|---|---
| Full—shoot| Send parameters and triggering signal when camera is shooting(suitable for multi person photography)
APP| APP| Only send triggering signal when camera is shooting (control the flash’s parameters by smartphone APP)
DIST| Triggering distance| 0-30m| 0-30m triggering
1-100m| 1-100m triggering
ID| Wireless ID| OFF| Off
01-99| Choose any figure from 01-99 (the current flashes cannot use this function temporarily)
TCM| TCM transform function| | TT685N860I1 series| The power output values in the M mode which are transformed from TTL mode, being subjected to the master flash when mixing
200j| AD200
360j
600j| AD360I1 AD600

Compatible Flash Models

  • Compatible Flash Models
    Transmitter| Receiver| Flash| Note
    ---|---|---|---
    XProS| —| AD600 series/AD360ll series/AD200 AD400ProN8601I seriesN85011 TT685 series/TT600/TT350S Quicker!! series/QTII/SK II series DP II series/GS!!|
    X1 R-S| F42AM/HVL-45RM/HVL-F60M/ HVL-F43M/ HVL-F32M/F58AM| As there are so many camera flashes in the market which are compatible with
    Sony speedlites, we do not test one by one.
    XTR-16| AD360/AR400| The flashes with Godox wireless USB port
    Quicker series/SK series/DP series GT/GS series / Smart flash series| Can only be triggered
    XTR-16S| V860N850|

Note : The range of suppert funciions: the functions tha are both owned by XProS and flash.

  •  The relationship of XT wireless system and X1 wireless system:Godox XProS Wireless Flash Trigger Transmitter - realation

Compatible Camera Models

“This flash trigger can be used on the following Sony series camera models:

a77ll _ a77 a9  ILCE-6000L a9 ATR  ATRIl &350

DSC-RX10

  1. Tris table only st the tested camera models, not all Sony series cameras. For the compatibilty of other camera models, a self-test is recommended,
  2. Rightsto moiy this table are retined.
  3. The cameras which are roleased before 2012 do not have TTL mode n their D and E group.

Technical Data

Model XProS
Compatible cameras Sony cameras (TTL autoflash)

Support for the cameras that have PC sync socket.
Power supply| 2*AA batteries
Flash Exposure Control
TTL autoflash| Yes
Manual flash| Yes
Stroboscopic flash| Yes
Function
High-speed sync| Yes
Second-curtain sync| Yes
Flash exposure compensation| Yes, ±3 stops in 1/3 stop increments
Flash exposure lock| Yes
Focus assist| Yes
Modeling lamp| Control the modeling lamp by the flash trigger
Beeper| Control the beeper by the flash trigger
Wireless setting| The receiver end can control the camera shooting through the 2.5mm sync cord jack
ZOOM setting| Adjust the ZOOM value by the transmitter
TCM function| Transform the TTL shooting value into the output value in the M node
Firmware upgrade| Upgrade through the Type-C USB port
Memory function| Settings will be stored 2 seconds after last operation and recover after a restart
Wireless Flash

Transmission range (approx.)| 0-100m
Built-in wireless| 2.4G
Modulation mode| MSK
Channel| 32
Wireless ID| 01-99
Group| 16
Other
Display| Large LCD panel, backlighting ON or OFF
Dimension/Weight| 90x58x5Omm/80g
2.4G Wireless Frequency Range| 2413.0MHz-2464.5MHz
Max. Transmitting Power of 2.4G Wireless| 5dbm

  • Restore Factory Settings
    Synchronously press the two function button n the middle, and the restore factory setings are fnished unti the “RESET” i displayed on the LCD pan.

  • Firmware Upgrade
    “This flash trigger supports firmware uprads through the Type-CUSB port. Updats information will be released on our official website.

USB connection line is not included in this product.As the USB port is a ‘Type-C USB socket, please use Type-C USB connection line.
As the finware upgrade needs the support of Godox G2 software, please download and install the *Godox G2 firmware upgrade software” before upgrading. Then, choose the related firmware fIle.

Attention


  • As the products needs to do firmware upgrade, please refer to instruction manual of the newest electric version as final.
    1. Unable to trigger flash or camera shutter. Make sure batteries are installed correctly and Power Switch s tuned on. Check if the transitter and the receiver are set to the same channe, if the hotshoe mount or connection cable s well connected, or if the flash triggers are set 1o the correct mode,
    2. Camera shoots but does not focus. Check if the focus mode of the camera or lens.is set 1o MF. If 5o, set it o AF.
    3. Signal disturbance or shooting interference. Change a different channel on the device.

The Reason & Solution of Not Triggering in Godox 2.4G Wireless

  1. Disturbed by the 2.4G signal in outer environment (e.g. wireless basestation, 2.4G wifi router, Bluetooth, etc.)
    → To adjust the channel CH setting on the flash trigger (add 10+ channels) and use the channel which is not disturbed. Or tum off the other 2.4G equipment in working.

  2. Please make sure that whether th flash has finished its recycle or caught up with the continuous shooting speed or not(the flash ready indicator is.
    lighten) and the flash is not under the state of over-heat protection or other abnormal situation.
    → Please downgrade the flash power output. I the fiash is in TTL mode, please try to change it to M mode(a preflash is needed in TTL mode).

  3. Whether the distance between the flash trigger and the flash is too close or not
    → Please tum on the “close distance wireless mode” on the flash trigger (< 0.5m):
    → Please set the C.Fn-DIST to 0-30m.

  4. Whether the flash trigger and the receiver end equipment are in the low battery states or not
    →Please replace the battery(the flash trigger is recommended to use 1.5V disposable alkaline battery).

Caring for Flash Trigger

  • Avoid sudden drops. The device may fai to work after strong shocks, impacts, or excess stress
  • Keep dry. The product isn’t water-proof. Malfunction, rust, and corrosion may oceur ‘and o beyond repair if soaked in water or exposed to high humidity.
  • Avoid sudden temperature changes. Condensation happens if sudden temperature changes such as the circumstance when taking the transceiver out of a building with higher temperature to outside in winter. Please put the transceiver in a handbag or plastic bag beforehand.
  • Keep away from strong magnetic field. The strong static or magnetic field produced by devices such as radio transmitters leads to malfunction.

FCC Statement

A. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

  1. This device may not cause harmful interference, and
  2. this device must accept any interference received, including interference that may cause undesired operation.

B. Warning: Changes or modifications to this unit not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment.
C. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Warning
Operating frequency:2412.09MHz ~ 2464.49MHz
Maximum EIRP Power: 2.3dBm
Declaration of Conformity
GODOX Photo Equipment Co. Ltd. hereby declares that this equipment are in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. In accordance with Article 10(2) and Article 10(10) this product s allowed to be used in all EU member states.For more information of DoC, Please click this web link https://wwwgodox.com/DOC/GodoxXPro_Series_DOC.pdf
The device complies with RF specifications when the device used at Omm from your body.

GODOX Photo Equipment Co, Ltd.
Building A4, Xinhe Huafa Industrial Zone, Fuzhou RD West, Fuyong
Town, Baoan District, Shenzhen 518103, China
Tel: +86-755-20600320(8062)
Fax: +86-755-25723423
E-mail:godox@godox.com
705-XPRZS0-00
Made In China

Documents / Resources

| Godox XProS Wireless Flash Trigger Transmitter [pdf] Instruction Manual
XProS Wireless Flash Trigger Transmitter, XProS, Wireless Flash Trigger Transmitter, Flash Trigger Transmitter, Trigger Transmitter, Transmitter
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