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The Calumet Quad Plus 2.4GHz Wireless Trigger system will synchronize your Canon DSLR and external flash to allow for manual remote Speedlight or strobe operation up to 500 feet. The kit can also be used as a wireless or wired camera trigger.

The Quad Plus enables you to assign your flashes to four groups so that you can either isolate or combine different groups to allow for complex lighting setups. The trigger's four channels can be used so that up to four different photographers can shoot with the Quad Plus in the same location without triggering each other's flashes.

The transmitter features a TTL pass-through hot shoe which allows full TTL mode to be used with a camera-mounted flash. The receivers trigger the flashes manually and offer flash wake-up functions on compatible flashes.

This system is optimized for use with Canon Speedlites, but can also be used to trigger studio strobes or with Olympus and Sony Cameras as a wireless shutter release.

Channels: 4 (1, 2, 3, 4)

Groups: 4 (A, B, C, D)

Range: Up to 500 ft (150m)

Frequency: 2.4 GHz

Sync Speed: Up to 1/250 sec*

Flash Wake-up: Yes*

TTL Pass-Through: Yes (on camera flash only)

Transmitter Power Source: 2 AAA Batteries (included)

Transmitter Ports: 3.5mm Port for PC Sync Cable, Hot Shoe

Receiver Power Source: 2 AAA Batteries (included), 5V DC Power Port

Receiver Ports: 3.5mm Port for PC Sync Cable, Hot Shoe, 2.5mm Port for Shutter Release Cable

* On compatible cameras and flashes only.