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Cactus Wireless Flash Trigger Set V4
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Cactus Wireless Flash Trigger Set V4

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The much anticipated, all-new Cactus Wireless Flash Trigger System V4 is here! This new flash trigger system is a significant upgrade from all current and previous Cactus wireless flash trigger versions. The new version gives photographers even greater creative control over lighting in their images.

With the new Cactus Wireless Flash Trigger System V4, you can place multiple flashes at various angles and distances from your subject. This is particularly useful for portrait and product photography. Each receiver works with one flash. You can use as many receivers as you wish, all receiving their signal from one transmitter. Simply attach the hot shoe of the external flash to that of the receiver, or use the flash connection cable. Most importantly, without the need to connect the flash to your camera by hot shoe or cable, you can move the flash to anywhere that produces the best lighting on your subject. With the flexibility the new Cactus V4 triggers provide, the possibilities are endless!

The innovative standing design allows all the common portable flash units to sit securely on it without a separate light stand. When shutter is released, the receiver picks up on the signal emitted from the transmitter on your camera and will trigger the external flash connected to it. The fastest response time is 1/1000s (actual sync speed varies from 1/125s to 1/600s depending on the sync speed limit of the camera system). The Cactus V4 offers many improved features over the V2 version. These improvements include a new antenna design that increases the reliability and effective distance to 30 meters (about 100 feet) and a new power source: AAA batteries. The 16 selectable channels and advanced anti-interference feature will allow the device to work within the effective area without interference from other devices. This new Cactus version offers a high degree of compatibility. With the provided connection cables, photographers can use the receiver with a range of lighting sources including low trigger voltage portable flashes, high trigger voltage portable flashes and studio strobes.

A complimentary copy of the photo album, "When Light Dances" is included in the package. Wonderful pictures taken by photographers using the new and improved Cactus V4 radio trigger system, as well as setup details are shown for your reference.

Notes on compatibility:

  1. Cactus V4 does not work with V2s or V2;
  2. Cactus V4 does not transmit TTL information.
  3. Some dedicated flashes (e.g. Nissin Di-622 and Di-466, Sunpak PZ42x and PZ30, Sigma EF-530/500 DG ST for Canon, etc.) are triggered via system-specific pins instead of the central contact of the hot shoe. Cactus V4 does not work with these flash models. To check whether your dedicated flash units are compatible with Cactus V4, try attaching them to a camera of other brand (e.g. attaching a Nikon TTL flash to a Canon DSLR camera). If the flash can be triggered, it will work with Cactus V4.
  4. Tested with the following flash models:
    • Cactus AF50, AF45, KF36;
    • Canon SpeedLite 580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EX II, 430EX, 430EZ, 420EX, 420EZ, 380EX, 200E;
    • Metz 58AF, 48AF;
    • Nikon SpeedLite SB-900, SB-800, SB-700, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24;
    • Nissin Di866 MK II, Di622 MK II, Di466, Di866 MK I;
    • Olympus FL-50R, FL-50, FL-36R, FL-36;
    • Pentax AF-540 FGZ, AF-360 FGZ, AF-400 FT, AF-240 FT;
    • Sigma EF-530 DG Super, EF-530 DG ST (for Nikon only), EF-500 DG Super, EF-500 DG ST (for Nikon only), EF-430;
    • Sunpak Auto 2000DZ, 622 Pro, 433AF, 433D, 383, 355AF, 344D, 333D;
    • Vivitar 285HV, 285, 283, DF-400MZ, DF-340MZ;
    • Godox TT560, TT520, CF-18;
  5. Some buyers reported to us that they experienced banding issue with Canon 5D and/or Panasonic Lumix DMC-G1 when using Cactus V4. Similar issue was NOT found in Canon 5D Mark II and other DSLR camera models. (Update 29/6/2010This issue has now been fully resolved. All Cactus V4 sent after 21 June 2010 should no longer cause banding issues with Canon EOS 5D or Panasonic Lumix DMC-G1.)


  • Cactus Wireless Flash Trigger Set V4;
  • Package contents:
    • V4 Transmitter x 1;
    • V4 Receiver x 1;
    • English User Manual;
    • "When Light Dances” Album;
    • 3.5mm Plug Cable (CA-350);
    • 6.35mm Plug Cable (CA-635);
    • PC Sync Cable (CA-100);
  • Technical Data:
    • Working radio frequency: 433Mz;
    • 16 channels selectable;
    • Responding time: 1/500 - 1/1000 second;
    • Support sync speed: up to 1/500 second (depending on sync speed limitation of the flash unit);
    • Maximum effective area: 30 meters / 98 feet (open area without interference);
    • Operating temperature: above -10°C (14°F) and below 45°C (113°F);
  • Transmitter:
    • Camera voltage handling: up to 6 volts;
    • Compatible to all cameras with standard ISO hot shoe or PC sync output;
    • Connection port: 3.5 mm (1/8") mono mini-phone;
    • Dimensions: 60 x 46 x 27 mm;
    • Length of antenna: 45 mm;
    • Weight (including battery): 33 grams;
    • Power input: one (1) L1028 / 23A 12V battery;
  • Receiver:
    • Innovative standing design: supports major portable flash units;
    • Flash voltage handling: up to 300 volts;
    • Compatible to portable flashes and studio strobes;
    • Connection port: 3.5 mm (1/8”) mono mini-phone;
    • Dimensions: 74 x 45 x 28 mm;
    • Weight (including battery): 55 grams;
    • Power input: two (2) AAA size 1.5V (IEC: R03) batteries.
  • One Year Manufacturer Warranty.

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We’re Closing!

Gadget Infinity started almost a decade ago, sourcing the best price-performance photographic and two-way radio gear for fellow photography enthusiasts. It has been a wonderful journey sharing the many location portrait techniques with you on our YouTube channel. Over the years our passion in flash photography grew so much that we ventured into creating our own wireless flash triggering system – Cactus.

Starting next month, we will be putting all of our time and effort into product development at Cactus so we will be closing our operation at Gadget Infinity on August 30, 2016. Rest assured, the 30-day return policy still applies on your orders made on or before the date of our store closure. If you have any questions or concerns, please contact us at service@gadgetinfinity.com.

It will be a good bye but not a sad one as we will still stick around. Come visit us at

Thank you again for your support over the years and best wishes!

From everyone at Gadget Infinity.

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