Godox X2T-O TTL Wireless Flash Trigger

Foreword

Thank you for purchasing the Godox X2T-O wireless flash trigger. This wireless flash trigger is suitable for using Olympus & Panasonic cameras to control Godox flashes with the X system, such as camera flashes, outdoor flashes, and studio flashes. Featuring multi-channel triggering, stable signal transmission, and sensitive reaction, it provides photographers with unparalleled flexibility and control over their strobist setups. The flash trigger applies to hotshoe-mounted Olympus & Panasonic series cameras, as well as cameras with PC sync sockets. With the X2T-O wireless flash trigger, high-speed synchronization is available for most camera flashes on the market that support TTL. The maximum flash synchronization speed is up to 1/8000s*.

*1/8000s is achievable when the camera has a maximum shutter speed of 1/8000s.

Warning

⚠️ Do not disassemble. Should repairs become necessary, this product must be sent to an authorized maintenance center.

⚠️ Keep dry. Do not use in rain or in damp conditions.

⚠️ Keep out of reach of children.

⚠️ Do not use in the presence of flammable gas. In certain circumstances, please pay attention to relevant warnings.

⚠️ Do not leave or store the product if the ambient temperature exceeds 50℃.

⚠️ Turn off the flash trigger immediately in the event of malfunction.

Precautions when handling batteries:

• Use only batteries listed in this manual. Do not use old and new batteries or batteries of different types simultaneously.
• 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 or backwards.
• Batteries are prone to leakage when fully discharged. To avoid damage to the product, 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

Body

Diagram description: The diagram shows the top and side views of the Godox X2T-O flash trigger. Key components labeled include: Hot Shoe Speedlight Connection, Mode Selection/Locking Button (MODE), Menu Button (MENU), Modeling Lamp Control, SET/ALL Settings Selection (SET/ALL), Group Buttons (A, B, C, D, E), TEST/Shutter Button, Type-C USB Port, 3.5mm Sync Cord Jack, Status Indicator Lamp, AF Assist Beam Switch, Power Switch, AF-assist Lamp Battery Compartment, and Select Dial. Notes indicate buttons have backlighting for dark environments.

LCD Panel

Diagram description: The diagram shows the LCD screen of the Godox X2T-O flash trigger with various indicators. Labeled elements include: Channel (CH), Group (A, B, C), Mode (M), Power (1/128), Sync (SYNC), Bluetooth status (BLUE.T.), Beeper status (BEEP), ZOOM value, and Version (V0.2). A legend explains the meaning of numbered indicators: 1. Channel, 2. Camera Connection, 3. Modeling Lamp Master Control, 4. High-Speed/Rear Curtain Sync, 5. Sound, 6. Battery Level Indication, 7. Group, 8. Mode, 9. Power, 10. ZOOM Value, 11. Version.

Battery

AA alkaline batteries are recommended.

Installing Batteries

As shown in the illustration, slide the battery compartment lid of the flash trigger and insert two AA batteries separately.

Battery Indication

Check the battery level indication on the LCD panel to see the remaining battery level during usage.

Note: The battery indication only refers to AA alkaline batteries. As the voltage of Ni-MH batteries tends to be low, please do not refer to this chart.

Setting the Flash Trigger

Power Switch

Slide the Power Switch to ON. The device is on, and the status indicator lamp will not reveal. Note: To avoid power consumption, turn off the transmitter when not in use.

Automatically Enter Power Saving Mode

1. The system automatically enters standby mode after 60 seconds of inactivity. The LCD panel displays disappear.

2. Press any button to wake up. If the flash trigger is attached to the hot shoe of an Olympus or Panasonic camera, half-pressing the camera shutter can also wake the system.

Note: To disable power saving mode, press the <MENU> button, enter C.Fn custom settings, and set STBY to OFF.

Power Switch of AF Assist Beam

Slide the AF-assist beam switch to ON to allow AF lighting output. The AF assist beam will be lit when the flash trigger is attached to the camera and will turn off during camera firing.

Channel Setting

1. Short press the <MENU> button and select CH to set the channel value.

2. Turn the select dial to choose the appropriate channel. The channel value is confirmed after exiting the menu.

3. The trigger has 32 channels (1-32). Set the transmitter and receiver to the same channel before use.

Wireless ID Settings

Change wireless channels and Wireless ID to avoid interference. Triggering only occurs when the wireless IDs and channels of the master and slave units match.

Press the <MENU> button to enter C.Fn ID. Press the <SET> button to choose OFF for channel expansion shutdown, or select a figure from 01 to 99.

Note: This function is only usable if the slave units support wireless ID settings. If not, set the ID to OFF.

Mode Setting

1. After selecting a group button, press the <MODE> button to cycle through modes (TTL/M/--). The mode for the selected group will change.

2. In normal operation, press the <MODE> button to switch to MULTI mode. Press a group selection button, then press <MODE> to toggle MULTI mode ON or OFF.

Output Value Settings

In M mode:

1. Select a group using the group button. Turn the select dial to adjust the power output value from Min. to 1/1 in 0.3 stop increments. Press <SET> to confirm.

2. Press the <ALL> button to select all groups. Turn the select dial to adjust all groups' power output from Min. to 1/1 in 0.3 stop increments. Press <ALL> again to confirm.

Note: Min. refers to the minimum settable value in M or Multi mode. The minimum value can be 1/128 (0.3), 1/256 (0.3), 1/128 (0.1), 1/256 (0.1), 3.0 (0.1), or 2.0 (0.1) based on C.Fn-Min settings. For most camera flashes, the minimum output is 1/128 and cannot be set to 1/256. However, it can be set to 1/256 when used with Godox high-power flashes like the AD600.

Flash Exposure Compensation Settings

In TTL mode:

Select a group using the group button. Turn the select dial to adjust the FEC value from -3 to +3 in 0.3 stop increments. Press <SET> to confirm.

Multi Flash Settings (Output Value, Times and Frequency)

1. In Multi Flash mode, TTL and M icons are not displayed.

2. The three lines display power output value, Hz (flash frequency), and Times (flash count).

3. Press <SET> and turn the Select Dial to change the power output from Min. to 1/4 in integer stops.

4. Press <SET> again to select Hz and change the flash frequency using the dial.

5. Press <SET> again to select Times and change the flash count using the dial.

6. All values are set. Alternatively, short press <SET> during any value setting to exit.

7. In the multi flash submenu, short press <MODE> to return to the main menu when no values are blinking.

Note: Flash times are limited by flash output value and frequency. The system restricts the maximum flash times. The actual flash time transmitted to the receiver is also related to the camera's shutter setting.

Modeling Lamp Settings

Long press the <MENU> button for 2 seconds to control the ON/OFF of the modeling lamp.

ZOOM Value Settings

Short press the <MENU> button to enter the ZOOM menu. Short press <SET> and turn the select dial to change the ZOOM value from AUTO/24 to 200. Select the desired value and return to the main menu.

Note: The flash's ZOOM must be set to Auto (A) mode to respond.

Shutter Sync Settings

1. High-speed sync: Short press the <MENU> button to enter the SYNC menu. Select the high-speed sync icon; it will appear on the LCD panel.

2. On Olympus cameras, press the OK button. On Panasonic cameras, press the MENU button to set second-curtain mode. The display will show '2nd-C' mode.

Buzz Settings

Press the <MENU> button to enter C.Fn BEEP. Press <SET> to choose ON (to enable the beep) or OFF (to disable it). Press <MENU> again to return to the main menu.

Sync Socket Settings

1. Press the <MENU> button to enter C.Fn SYNC. Press <SET> to choose IN or OUT. Press <MENU> again to return to the main menu.

1.1. Selecting 'IN' enables the sync socket for the X2T-O to trigger flashes.

1.2. Selecting 'OUT' sends trigger signals to control other remote controls and flashes.

SHOOT Function Settings

Press the <MENU> button to enter C.Fn SHOOT. Press <SET> to choose one-shoot or multi-shoots, then press <MENU> to return to the main menu.

One-shoot: For single-person photography, the master unit sends only triggering signals to the slave unit in M and Multi modes, saving power.

Multi-shoots: For multi-person photography, the master unit sends parameters and triggering signals to the slave unit. This consumes more power.

APP: Sends triggering signals only when the camera is shooting (allows flash parameter control via smartphone APP).

C.Fn: Setting Custom Functions

The following table lists available and unavailable custom functions:

Using the Flash Trigger

1. As a Wireless Camera Flash Trigger

Example: Godox TT685O

1.1 Turn off the camera and mount the transmitter on the camera's hotshoe. Then, power on the flash trigger and the camera.

1.2 Short press the <MENU> button to set channel, group, mode, and parameters (refer to "Setting the Flash Trigger" section).

1.3 Turn on the camera flash. Press the < > wireless setting button. The < > wireless icon and <SLAVE> slave unit icon will appear on the LCD panel. Press the <CH> button to set the same channel as the flash trigger, and press the <Gr> button to set the same group as the flash trigger. (Note: Refer to the relevant manual for other camera flash models.)

1.4 Press the camera shutter to trigger. The flash trigger's status lamp will turn red synchronously.

2. As a Wireless Outdoor Flash Trigger

Example: Godox AD600B

2.1 Turn off the camera and mount the transmitter on the camera's hotshoe. Then, power on the flash trigger and the camera.

2.2 Short press the <MENU> button to set channel, group, mode, and parameters (refer to "Setting the Flash Trigger" section).

2.3 Power on the outdoor flash. Press the < > wireless setting button. The < > wireless icon will appear on the LCD panel. Long press the <GR/CH> button to set the same channel as the flash trigger, and short press the <GR/CH> button to set the same group as the flash trigger. (Note: Refer to the relevant manual for other outdoor flash models.)

2.4 Press the camera shutter to trigger. The flash trigger's status lamp will turn red synchronously.

3. As a Wireless Studio Flash Trigger

Example: Godox GS400II

3.1 Turn off the camera and mount the transmitter on the camera's hotshoe. Then, power on the flash trigger and the camera.

3.2 Short press the <MENU> button to set channel, group, mode, and parameters (refer to "Setting the Flash Trigger" section).

3.3 Connect the studio flash to a power source and turn it on. Simultaneously press and hold the <GR/CH> and <S1/S2> buttons. The < > wireless icon will appear on the LCD panel. Long press the <GR/CH> button to set the same channel as the flash trigger, and short press the <GR/CH> button to set the same group as the flash trigger. (Note: Refer to the relevant manual for other studio flash models.)

3.4 Press the camera shutter to trigger. The camera flash and flash trigger status lamps will turn red synchronously.

Note: As studio flashes have a minimum output value of 1/32, the flash trigger's output value should be set to 1/32 or higher. Since studio flashes lack TTL and stroboscopic functions, the flash trigger should be set to M mode for triggering.

4. As a Flash Trigger with 3.5mm Sync Cord Jack

Operation method:

4.1 For connection method, please refer to the sections "As a Wireless Studio Flash Trigger" and "As a Wireless Shutter Release".

4.2 Set the transmitter's sync cord jack as an output port. Operation: Press the <MENU> button on the transmitter to enter C.Fn settings. Set PC SYNC to OUT mode.

4.3 Press the shutter normally. Flashes will be controlled by the sync cord jack signal.

5. Connect to Smartphone through Bluetooth

Using method:

5.1 Short press the <MENU> button to enter BLUE.T. to enable Bluetooth. The Bluetooth ID will be displayed under 'ON'.

5.2 Search for "GodoxPhoto" in the iPhone App Store and download the app, or scan the QR code with your smartphone to install it.

5.3 Open the app and select .

5.4 Connect the transmitter to the corresponding Bluetooth ID and enter the password to pair (initial password is "000000").

5.5 Once paired, return to the app's main interface.

5.6 When Bluetooth is activated, the Bluetooth icon will appear on the transmitter's panel.

5.7 Set the channels of the slave flash and the transmitter to be the same. Parameters like slave flash mode, power value, modeling lamp, and beep can be controlled via the smartphone app.

5.8 Use the smartphone app for shooting after setting all parameters.

Note: After successfully connecting the flash trigger and smartphone app, the auto-sleep function can be set to 30 minutes.

Compatible Models

Compatible Smartphone Models

This flash trigger can be used with the following smartphone models:

• iPhone 6S, iPhone 6S Plus, iPhone 7 Plus, iPhone 7, iPhone 8 Plus, iPhone 8, iPhone 6 Plus, iPhone 6, iPhone X
• HUAWEI P9, HUAWEI P10, HUAWEI P10 Plus, HUAWEI Mate 9 Pro, HUAWEI Mate 9, HUAWEI Mate 10 Pro, HUAWEI Mate 10, HUAWEI P20, HUAWEI P20 Pro
• Samsung galaxy S8, Samsung galaxy Note8, Samsung galaxy S9

1. This table lists only tested smartphone models, not all smartphones. Self-testing is recommended for compatibility with other smartphone models.

2. The company reserves the right to modify this table.

Compatible Flash Models

Diagram description: A table lists Transmitter/Receiver Flash models and notes.

Note: The range of supported functions includes functions common to both the X2T-O and the flash.

Compatible Camera Models

This flash trigger can be used with the following Olympus & Panasonic series camera models:

• Olympus: PEN-F, E-P3, E-P5, E-PL5, E-PL6, E-PL7, E-PL8, E-M1, E-M10II
• Panasonic: DMC-G85, DMC-GH4, DMC-GF1, DMC-GX85, DMC-LX100, DMC-FX2500GK, DMC-GH5

1. This table lists only tested camera models, not all Olympus & Panasonic series cameras. Self-testing is recommended for compatibility with other camera models.

2. The company reserves the right to modify this table.

Technical Data

Restore Factory Settings

Hold the MODE button and power on the flash trigger. All parameters will restore to factory settings.

Firmware Upgrade

This flash trigger supports firmware upgrades via the Type-C USB port. Update information will be released on the official website.

• USB connection cable is not included. Use a Type-C USB cable.
• Firmware upgrades require the "Godox G3 firmware upgrade software". Download and install it before upgrading, then select the relevant firmware file.

Attentions

1. Unable to trigger flash or camera shutter: Ensure batteries are installed correctly and the Power Switch is ON. Check if the transmitter and receiver are on the same channel, if the hotshoe mount or connection cable is properly connected, and if the flash triggers are in the correct mode.

2. Camera shoots but does not focus: Check if the camera or lens focus mode is set to MF. If so, set it to AF.

3. Signal disturbance or shooting interference: Change the channel on the device.

4. Limited operating distance or flash missing: Check if batteries are exhausted. If so, replace them.

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

1. Disturbance by 2.4G signal in the environment (e.g., wireless base stations, 2.4G Wi-Fi routers, Bluetooth): Adjust the flash trigger's channel (add 10+ channels) to an undisturbed channel, or turn off other 2.4G equipment.

2. Ensure flash has finished recycling or caught up with continuous shooting speed (flash ready indicator is lit) and is not in overheat protection or abnormal state: Reduce flash power output. If in TTL mode, try switching to M mode (requires a pre-flash in TTL mode).

3. Distance between flash trigger and flash is too close or too far: Turn on "close distance wireless mode" on the flash trigger (for distances < 0.5m). Set C.Fn-DIST to 0-30m.

4. Low battery status for flash trigger and receiver: Replace batteries (1.5V disposable alkaline batteries are recommended).

Caring for Flash Trigger

• Avoid sudden drops. The device may fail to work after strong shocks, impacts, or excess stress.
• Keep dry. The product is not waterproof. Malfunction, rust, and corrosion may occur and become irreparable if soaked in water or exposed to high humidity.
• Avoid sudden temperature changes. Condensation can occur from sudden temperature changes (e.g., taking the transceiver from a warm building into the cold outdoors in winter). Place the transceiver in a handbag or plastic bag beforehand.
• Keep away from strong magnetic fields. Strong static or magnetic fields from devices like radio transmitters can cause malfunctions.

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 party 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.