Wandeln Sie Ihre elektrischen Kabel in optische Auslöser um und lösen Sie jeden Blitz mit einem optischen Auslöser aus (Inon- oder Sea&Sea-Stecker, der standardmäßig unterstützt wird). Sie können nun das Blitzgerät unter Wasser von Ihrer Kamera entfernen und es schnell einsetzen, um Hinterleuchtungseffekte z.B. auf Korallen zu erzeugen. Sie können bis zu zwei optische Kabel an den Konverter anschließen.  Funktioniert nur mit manuellen Leistungseinstellungen, TTL wird nicht unterstützt.

A reliable Manual trigger for underwater photographers that works via fiber optic cable or sync cord. e-TURTLE  MANUAL This Manual trigger was developed for Canon DSLR and MILC camera systems. The e-TURTLE MANUAL is the perfect choice for the demanding underwater photographer who needs an easy to use, affordable, and reliable trigger that works with the most popular underwater strobes (Inon, Ikelite, Sea&Sea, Subtronic, OneUW, Retra, Backscatter miniflash etc). Features: 1st or 2nd curtain, HSS mode (Over 1/200 shutter speed the TURTLE enable the HSS and disable the 2nd curtain mode). The Internal charging system works via a USB AB connector. Compatible camera models are the Canon DSLR and Mirrorless cameras.  Compatible strobes (as of 01.09.2020.): Ikelite DS160, Inon Z240/Z330, Sea&Sea YS-250, YS-D1, YS-D2, D2J YS-D3, YS-110a, Subtronic Pro 160, Pro 270, One UW, Retra (old and new models), Retra PRO (HSS mode available!) The e-TURTLE MANUAL is a user-friendly trigger: you simply connect the LED or the sync cord connector and you can take hundreds of shots without charging. The TURTLE MANUAL triggers fit into the most popular underwater housings (tested with Nauticam, Subal, Hugyfot, Isotta, Ikelite, Seacam models). If you want to connect your strobe via fiber optic cable we recommend using multicore cable! (Please write Us which kind of connection do you use. We also recommend writing us what kind of underwater strobe will you control with the TURTLE trigger so we can be sure you got a product which fulfills your needs.) There is also a USB cable in the package for charging.

Der FA-3 LED Blitz-Auslöser löst Unterwasserblitze aus, die synchron mit der Kamera über Glasfaserkabel ausgelöst werden.  Die Verwendung des LED-Blitzauslösers erübrigt das Auslösen des eingebauten Blitzes der Kamera, wodurch die Akkulaufzeit der Kamera verlängert und längere Aufnahmesessions ermöglicht werden. Durch den Verzicht auf den eingebauten Blitz der Kamera wird auch eine Erwärmung der Kamera verhindert, was zu einer geringeren Kondensation im Gehäuse führt. Die superschnellen Recyclezeiten des LED Blitz-Triggers ermöglichen eine schnelle Aufnahme und Auslösung der Blitze, ohne auf das Laden des eingebauten Blitzes der Kamera warten zu müssen.  Der FA-3 LED Blitz-Auslöser kann an jede Kamera mit Blitzschuhanschluss angeschlossen werden. Es kann in jedes Kameragehäuse eingebaut werden, das genügend Platz für die Platzierung der Haupteinheit bietet.  Der FA-3 LED Blitzauslöser ist auch kompatibel mit den spiegellosen Gehäusemodellen von Fantasea, die mit dem hybriden Vakuum-Sicherheitssystem M16A von Fantasea ausgestattet sind. Der FA-3 LED Blitzauslöser ist in der Lage, die meisten auf dem Markt erhältlichen Unterwasserblitze auszulösen.  Beachten Sie, dass bei Verwendung des LED-Blitzauslöser die Blitzleistung nur manuell gesteuert wird. Für eine optimale und zuverlässige Leistung wird empfohlen, den FA-1 LED Blitz-Trigger mit hochwertigen mehradrigen Glasfaserkabel zu verwenden, die auf dem Markt erhältlich sind. ACHTUNG: Nicht kompatibel mit dem Sea&Sea YS-D2J von Sea&Sea

A reliable Manual trigger for underwater photographers that works via fiber optic cable or sync cord. s-TURTLE  MANUAL This Manual trigger was developed for Sony DSLR and MILC camera systems. The s-TURTLE MANUAL is the perfect choice for the demanding underwater photographer who needs an easy to use, affordable, and reliable trigger that works with the most popular underwater strobes (Inon, Ikelite, Sea&Sea, Subtronic, OneUW, Retra, Backscatter miniflash etc). Features: 1st or 2nd curtain, HSS mode (Switch on the "WL mode"). The Internal charging system works via a USB AB connector. Compatible camera models are the SONY DSLR and Mirrorless cameras. Compatible strobes (as of 01.09.2020.): Ikelite DS160 Inon Z240/Z330 Sea&Sea YS-250, YS-D1, YS-D2, D2J YS-D3, YS-110a, Subtronic Pro 160, Pro 270 One UW Retra old and new models.   Retra PRO (HSS mode available in manual "WL" mode!) The S-TURTLE MANUAL is a user-friendly trigger: you simply connect the LED or the sync cord connector and you can take hundreds of shots without charging. The TURTLE MANUAL triggers fit into the most popular underwater housings (tested with Nauticam, Subal, Hugyfot, Isotta, Ikelite, Seacam, Saltedline models). If you want to connect your strobe via fiber optic cable we recommend using multicore cable! (Please write Us which kind of connection do you use. We also recommend writing us what kind of underwater strobe will you control with the TURTLE trigger so we can be sure you got a product that fulfills your needs.) There is also a USB cable in the package for charging.

Nauticam TTL Flash Trigger Compatible Cameras Canon EOS R3 Canon EOS R5 Canon EOS R6 Canon EOS 5D Mark IV

If you would like to use a TURTLE trigger with an electric sync cord in a Nauticam underwater housing, you can connect easily the Turtle to the Nauticam bulkhead with this special cable.

A reliable TTL and manual trigger that works over fibre optic or sync cable. e-TURTLE SMART Mobie This TTL trigger was developed for Canon DSLR camera systems that are to be used in smaller underwater housings when there is not enough space above the hot shoe for the TTL unit.The e-TURTLE MOBIE SMART has an approx. 10 cm long cable with a separate hot shoe plug. This feature allows the user to place the small TTL unit anywhere in the housing.. e-TTL2 mode The new e-TURTLE SMART TTL output operates in e-TTL2 mode and it is possible to switch between manual and TTL modes from the camera. The e-TURTLE SMART is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most common underwater flashes. Compatible camera models (as of 09.2021.) Canon 5D Mark4, Canon7D Mark2 Compatible strobes (as of 09.2021.): Ikelite DS160, Inon Z240/Z330 As we regularly add new models please download and check the software before purchasing for the compatible camera and The dimension of box is: Height: 11mm Width: 26 mm Length: 36 mm USB port  The e-TURTLE SMART is a state-of-the-art, user-friendly TTL converter that can be set up by the user via the USB port for flash characteristics, camera type and some special function parameters. Once set up, simply select the flash and Canon camera model from the software and load the setup into the TURTLE's memory. The internal charging port allows the user to set up the flash characteristics, camera type and some special function parameters. The internal charging system works üvia the USB-AB port (This is a normal Android phone charger) . The package includes the e-TURTLE MOBIE SMART TTL trigger for Canon cameras and the LED panel or the special cable for connecting the sync cable. (Please write to us which type of connection you are using. We also recommend that you write us what kind of underwater flash you control with the TURTLE outlet).

A reliable TTL and manual trigger that works via fibre optic cable or sync cable e-TURTLE SMART This TTL trigger was developed for Canon DSLR camera systems. It is plugged directly into the camera's hot shoe.  e-TTL2 mode The new e-TURTLE SMART TTL trigger works in e-TTL2 mode and it is possible to switch between manual and TTL mode from the camera. The e-TURTLE SMART is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most popular underwater flashes.  USB connection  The e-TURTLE SMART is a state-of-the-art, user-friendly TTL converter that can be upgraded by the user via the USB port for flash characteristics, camera type and some special function parameters. Once upgraded, simply select the flash and Canon camera model from the software and load the setup into the TURTLE's memory. The internal charging system works via the USB-AB port (This is a normal Android phone charger). The package includes the e-TURTLE MOBIE SMART TTL trigger for Canon cameras and the LED panel or the special cable for connecting the sync cable. (Please write to us which type of connection you are using. We also recommend writing to us what type of underwater flash you control with the TURTLE trigger).

Flash emitters enable fast shooting sequences, perfect for fast motion sequences. Since the pop-up flash is not used, the camera doesn't have to wait for the pop-up flash to recycle, which means faster shooting, less heat buildup, and longer camera battery life. Shoot as fast as your external flashes can. This flash output is manual only; automatic flash exposure (TTL) is not currently possible.   Supported flashes include all RetraFlashes, the Inon Z-240 Type 4, D-2000 Type 4, S-2000, Sea&Sea YS-250*, YS-01, and YS-D1. Photographing with fiber optic cables means shooting safely. There are no sync cords to get damaged in floods or corrosion, which means much higher reliability, and the flash can even be removed from the rig while underwater to allow for off-camera lighting. The flash can even be removed from the rig while underwater to allow for off-camera lighting. The flash output for Canon weighs less than 70 grams, including batteries, and attaches to the hot shoe of the camera, which is fixed with a locking lever. It uses 2x CR3032 batteries, which in combination with the highly efficient LED trigger lights provide thousands of flashes (10000 estimated). An LED status indicator informs the user üabout the functionality of the device. It fits perfectly into the supported housings listed below. New housings for Canon SLR cameras also support flash Output. SUPPORTED HOUSINGS: NA-5DMKIII NA-1DX NA-6D NA-7DMKII NA-5DSR NA-1DXII NA-5DIV * 2013 model YS-250 strobes have been tested and function properly. Earlier models may have less sensitive slave sensors and be incompatible. * Nauticam Flash Trigger is not compatible with Sea&Sea YS-D2 strobe.

Reliable manual flash triggering via two CR-style battery-powered LEDs. Attaches to the housing via two screws and interfaces with the camera via attached hot-shoe cable. Compatible with electronic bulkheads equipped with micro connectors to provide manual flash triggering. Compatible Housings: NA-D5 NA-D500 NA-D850 NA-Z7 NA-Z8

A reliable TTL and Manual trigger which works via fiber optic cable or sync cord. i-TURTLE 2 SMART underwater photo trigger for Nikon mirrorless camera models This underwater TTL trigger was developed for Nikon mirrorless camera systems. The new i-TURTLE 2 SMART TTL trigger works in i-TTL Unified mode where it's possible to change between Manual and TTL modes from the camera. The i-TURTLE 2 SMART underwater flash trigger is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most popular underwater strobes. The i-TURTLE 2 SMART has a new, more durable metal hot shoe.  Compatible camera models (as of 11.2022.): Nikon Z30, Z50, Z6, Z6-2, Z7, Z7-2, Z9 Compatible strobes  (as of 09.2021.): Ikelite DS160, Inon Z240/Z330, Sea&Sea D2J, YS-D3, Retra Pro X and Backscatter Mini Flash 2 (HSS mode available in manual (FP) mode!) As we regularly add new models please download and run the software before purchasing, to check the compatible camera and strobe types.  The i-TURTLE 2 SMART is a state-of-the-art user-friendly TTL converter that can be upgraded by the user via the USB port. You can set the strobe characteristic and some special features too. Upon upgrading you simply choose the strobe and the camera model from the software and download the setup to the TURTLE's memory. The TURTLE SMART triggers fit into the most popular underwater housings (tested with Nauticam, Subal, Hugyfot, Isotta, Ikelite, and Seacam models).  The Internal charging system works via a USB AB connector and the included USB cable.  The package contains the i-TURTLE 2 SMART TTL trigger for Nikon mirrorless cameras and the LED panel (with the new, brighter 150 cd LEDs) or the special cable for sync cord connection. If you want to connect your strobe via fiber optic cable we recommend using multicore cable! (Please write Us about which kind of connection you use. We also recommend writing us about what kind of underwater strobe will you control with the TURTLE trigger so we can set up the unit you ordered.)  The setup software for PC is downloadable from this website: https://www.trt-electronics.com/content/media/docs/i_turtle_2_smart_setup_software.zip  Mac version is coming soon!  There is also a USB cable in the package for charging and upgrading.

A reliable Manual trigger for underwater photographers that works via fiber optic cable or sync cord. i-TURTLE  MANUAL This Manual trigger was developed for Nikon DSLR and MILC camera systems. The i-TURTLE MANUAL is the perfect choice for the demanding underwater photographer who needs an easy to use, affordable, and reliable trigger that works with the most popular underwater strobes (Inon, Ikelite, Sea&Sea, Subtronic, OneUW, Retra, Backscatter miniflash etc). Features: 1st or 2nd curtain, HSS mode (FP). The Internal charging system works via a USB AB connector. Compatible camera models are the Nikon DSLR and Mirrorless cameras. Compatible strobes (as of 01.09.2020): Ikelite DS160 Inon Z240/Z330 Sea&Sea YS-250, YS-D1, YS-D2, D2J YS-D3, YS-110a Subtronic Pro 160, Pro 270 One UW, Retra (old and new models) Retra PRO (HSS mode available in manual (FP) mode!) The i-TURTLE MANUAL is a user-friendly trigger: you simply connect the LED or the sync cord connector and you can take hundreds of shots without charging. The TURTLE MANUAL triggers fit into the most popular underwater housings (tested with Nauticam, Subal, Hugyfot, Isotta, Ikelite, Seacam models).

A reliable TTL and manual trigger that works via fibre optic cable or sync cable  i-Turtle Mobie Smart This TTL trigger was developed for Nikon DSLR camera systems to be used in smaller underwater housings where there is not enough space above the hot shoe for the TTL unit.  The i-TURTLE MOBIE SMART has an approx. 10 cm long cable with a separate hot shoe connector. This special feature allows the user to place the small TTL unit anywhere in the housing. i-TTL Unified mode The new i-TURTLE SMART TTL trigger operates in i-TTL Unified mode, switching between manual and TTL modes from the camera. The i-TURTLE SMART is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most popular underwater flashes (Inon, Ikelite, Sea&Sea, Subtronic). You can read about the compatible camera models in our blog post: https://www.trt-electronics.com/blog/nikon-unified-system-in-i-turtle-smart/12/ The i-TURTLE SMART is a state-of-the-art, user-friendly TTL converter that can be upgraded by the user via the USB port for flash characteristics and some special function parameters. Once upgraded, simply select the flash and camera model from the software and load the setup into the TURTLE's memory. USB connection The internal charging system works via the USB-AB port (This is a normal Android phone charger). The package contains the i-TURTLE MOBIE SMART TTL trigger for Nikon cameras and the LED panel or the special cable for connection to the sync cable. (Please write to us which type of connection you are using. We also recommend writing to us what type of underwater flash you control with the TURTLE trigger).

A reliable TTL and manual trigger that works via fibre optic cable or sync cable. i-Turtle Smart This TTL trigger was developed for Nikon DSLR camera systems. It is inserted directly into the camera's hot shoe. i-TTL Unified mode The new i-TURTLE SMART TTL trigger operates in i-TTL Unified mode, switching between manual and TTL modes from the camera. The i-TURTLE SMART is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most popular underwater flashes (Inon, Ikelite, Sea&Sea, Subtronic). You can read about the compatible camera models in our blog post: https://www.trt-electronics.com/blog/nikon-unified-system-in-i-turtle-smart/12/ The i-TURTLE SMART is a state-of-the-art, user-friendly TTL converter that can be upgraded by the user via the USB port for flash characteristics and some special function parameters. Once upgraded, simply select the flash and camera model from the software and load the setup into the TURTLE's memory. USB connection The internal charging system works via the USB-AB port (This is a normal Android phone charger). The package includes the i-TURTLE SMART TTL trigger for Nikon cameras and the LED panel or the special cable for connection to the sync cable. (Please write to us which type of connection you are using. We also recommend that you write us what type of underwater flash you control with the TURTLE trigger).

This adapter was developed for Nauticam A7/A9 series Sony housings.

Nauticam Blitzauslöser ermöglichen die Verwendung von robusten und zuverlässigen Glasfaserkabeln zum Auslösen externer Blitze und bieten eine zuverlässige, schnelle Blitzauslösung über Glasfaser.  Dieser Blitzauslöser wird in den kompatiblen Blitzschuh der Kamera gesteckt und liefert ein optisches Signal für einen schnellen, kontinuierlichen Blitzauslöser.  Die automatische TTL-Blitzsteuerung wird von diesem Blitzauslöser nicht unterstützt, die Blitzleistung wird manuell am Blitzgerät selbst eingestellt.

Nauticam flash trigger units allow the use of robust and reliable fiber optic cables to fire external strobes, providing dependable, rapid-fire flash triggering over fiber. Flash triggers allow motor drive shooting sequences, perfect for fast moving action. This flash trigger plugs into the A6600 camera hotshoe and provides an optical signal for fast, continuous strobe firing. Automatic TTL flash control is not supported by this flash trigger, flash power is set manually on the strobe itself.

A reliable Manual trigger for underwater photographers that works via fiber optic cable or sync cord. o-TURTLE  MANUAL This Manual trigger was developed for Olympus and Panasonic MILC camera systems. The o-TURTLE MANUAL is the perfect choice for the demanding underwater photographer who needs an easy to use, affordable, and reliable trigger that works with the most popular underwater strobes (Inon, Ikelite, Sea&Sea, Subtronic, OneUW, Retra, Backscatter miniflash etc). Features: 1st or 2nd curtain, HSS mode (Over 1/160 shutter speed the TURTLE switch to HSS mode.). The Internal charging system works via a USB AB connector. Compatible camera models are the Olympus and Panasonic Mirrorless cameras. Compatible strobes (as of 01.09.2020.): Ikelite DS160, Inon Z240/Z330, Sea&Sea YS-250, YS-D1, YS-D2, D2J, YS-D3, YS-110a, Subtronic Pro 160, Pro 270, One UW, Retra (old and new models).    Retra PRO (HSS mode available!) The o-TURTLE MANUAL is a user-friendly trigger: you simply connect the LED or the sync cord connector and you can take hundreds of shots without charging. The TURTLE MANUAL triggers fit into the most popular underwater housings (tested with Nauticam, Subal, Hugyfot, Isotta, Ikelite, Seacam, Saltedline models). If you want to connect your strobe via fiber optic cable we recommend using multicore cable! (Please write Us which kind of connection do you use. We also recommend writing us what kind of underwater strobe will you control with the TURTLE trigger so we can be sure you got a product which fulfills your needs.) There is also a USB cable in the package for charging.

o-TURTLE MOBIE SMART This TTL outlet is designed for Olympus and Panasonic mirrorless camera systems for use in smaller underwater housings where there is not enough space above the hotshoe for the TTL unit.The o-TURTLE MOBIE SMART has an approx. 10 cm long cable with a separate hotshoe. This feature allows the user to place the small TTL unit anywhere in the walkway. Manual or TTL mode The o-TURTLE SMART's new TTL output works in manual or TTL mode, which you can change during the dive. The o-TURTLE SMART is the perfect choice for the demanding underwater photographer who needs a reliable TTL converter that works with the most common underwater flashes (Inon, Ikelite, Sea&Sea, Subtronic). Because the LED on the outlet controls the flash instead of your camera's built-in flash, the camera's battery lasts much longer, so you don't have to open the underwater housing as often. The o-TURTLE SMART is a state-of-the-art, user-friendly TTL converter that can be set up by the user via the USB port for flash characteristics and some special function parameters. After setup, simply select the flash model from the software and download the setup to the TURTLE's memory.. USB port The internal charging system works üvia the USB-AB port (This is a normal Android phone charger). The package includes the o-TURTLE MOBIE SMART TTL trigger for Olympus/Panasonic cameras and the LED panel or the special cable for connecting the sync cable. (Please write to us which type of connection you are using. We also recommend that you write us what kind of underwater flash you control with the TURTLE outlet).

HSS Optoelectronic TTL-Converter for CANON R7 for NAUTICAM NA-R7 underwater housing. Compatible housings: Nauticam NA-R7. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D2 (China) / YS-250, Ikelite DS161 /, DS160, Subtronic Pro-270 / Pro-160, Retra Pro (including HSS).

Optoelectronic TTL Converter for NIKON for ISOTTA housings of former years, including 2 pcs Optical Bulkheads with built-in LED. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-270 / Pro-160, Retra Pro X (including HSS). Two optional ISOTTA electric bulkheads are supported as well, onboard sockets have ISOTTA style pinout. This TTL board is purposed for installation instead of Isotta special shape commutation board. Such type of Isotta housings has a special curved shape milled recess in metal, the same curved shape has the TTL-converter board. Check your housing regarding such installation version before TTL system purchasing.

The world's first TTL converter that is compatible with all Nikon DSLR cameras, regardless of model and TTL protocol version. Compatible underwater strobes: Inon Z-330, Z-240, Ikelite DS-161, DS-160, Sea&Sea YS-D1, YS-D2 (made in China), YS-250., RetraFlash PRO and Prime (includes HSS support). Compatible housings: NA-Z9, NA-Z7 / Z6, NA-D4, NA-D4S, NA-D5, NA-D500, NA-D600/D610, NA-D750, NA-D7200, NA-D800, NA-D810, NA-D850, ...etc. The product supports 4 TTL outputs: 2 optical + 2 electrical ports . TTL converter has automatic on/off, incredible battery life 5 years. Easy installation by the user. TTL and HSS on RetraFlash Fantastic TTL accuracy allows photographers to relax and rely completely on automatic flash exposure control. Many creative tasks are made possible by using extremely fast HSS shutter speeds of up to 1/8000 with the Retra Pro flash in manual mode. The TTL converter firmware also has some other important updates related to its common functionality. The Retra PRO profile can be set by the user üt via the TTL converter's built-in rotary switch. The TTL/M modes can be switched underwater simply by using the camera name or the flash button. In manual mode, the flash intensity can be adjusted manually üvia the camera wheel/scale, but also üvia the flash control knob. (+/-) TTL flash compensation is supported by the firmware, the full range is available via the camera control in the range -3ev......+3ev. The firmware supports sync settings for the 1-st /2-nd curtain and the rear curtain. Continuous (serial) recording is supported. The HSS firmware of the TTL converter supports the HSS functionality of the Retra Pro flash. The built-in rotary switch must be set to the Retra Pro profile (position - "7"). Available HSS shutter speeds for Sony A7-A9: 1/320 ....1/8000 sec. The Retra flash allows the HSS flash intensity to be set using the rotary knob. In the updated firmware, switching to HSS shutter speeds is also included in the general functionality of the TTL converter (also for all other positions of the rotary switch), - usable for shooting with ambient light at high shutter speeds if required. However, the X-Sync speed limit (1/250 for Sony A7-A9) is still automatically supported for TTL modes, as required for mono flash TTL underwater flash. Incredibly long battery life in the TTL converter: 1-3 years of continuous operation. The product has extremely low power consumption. The converter features an automatic on/off switching module that saves battery power. No mechanical switch is required to switch UW Technics TTL converters on and off. The TTL converter firmware includes TTL profiles for the following underwater flashes: Retra Pro, Inon Z-330/ Z-240/S-2000, Sea&Sea YS-D2/ YS-D1/ YS-250, Ikelite DS-161/ DS-160 and Subtronic Pro-270/Pro-160. Each profile can be easily set by the user üvia an onboard switch.

Optoelectronic TTL converter for Olympus for Nauticam underwater housings: NA-EM1 II, NA-EM5 II, NA-EM10 II, NA-EM10 III. The firmware includes the following underwater flash profiles: Inon Z-330 / Z-240 / D-2000, Sea&Sea YS-D2 (made in China)/ YS-D1 / YS-250, Ikelite DS-161 / DS-160, Subtronic Pro-270 / Pro-160, RetraFlash Pro (enables HSS). The combined unit contains optical TTL and electrical TTL modules on a single board. Synchronisation with underwater flash is possible via fibre optic cables or electrical cables, separately or simultaneously. The combined unit contains optical TTL and electrical TTL modules on a single board.

TTL-Converter for PANASONIC GH5 for NAUTICAM NA-GH5 underwater housing. New style Hot Shoe (5 pins) of m4/3 system. TTL-Converter does not need a battery. Compatible housings: NA-GH5. Compatible underwater strobes: Inon Z-330 / Z-240, Sea&Sea YS-D1 / YS-D3 Mark II / YS-250, Ikelite DS-230 / DS-162 / DS161 /, DS160 / DS-125, Subtronic Pro-160, Retra Pro X (HSS is NOT supported).