JJC JF-U1 Radio Trigger for Studio Flashes and System Flashes

The JJC JF-U1 is a reliable and affordable wireless radio trigger system designed for photographers who need to fire studio strobes, speedlights, or other flash units remotely. With a 433 MHz operating frequency and a range of up to 30 meters, this trigger set offers stable and consistent performance in various shooting environments. The set includes one transmitter and one receiver, making it easy to set up a basic off-camera flash configuration.

Advantages

Wireless freedom without the need for sync cables; 4 channels allow multiple triggers to be used simultaneously without interference; compact and lightweight design for easy portability; universal compatibility with most DSLR cameras (excluding older Sony/Minolta hot shoes) and flash units; includes a 3.5mm sync port with a 6.35mm adapter for studio strobes.

Suitable for

• Portrait and wedding photographers needing off-camera flash
• Studio photographers using multiple strobes
• Macro photographers requiring precise lighting control
• Event photographers who need reliable wireless triggering

Key specifications

• Trigger Type: Wireless Radio Trigger
• Operating Frequency: 433 MHz
• Number of Channels: 4
• Maximum Sync Speed: 1/200s
• Operating Range: Up to 30 meters (100 feet)
• Transmitter Power Source: 12V 23A Battery (included)
• Receiver Power Source: 2x AAA 1.5V Batteries (not included)
• Receiver Sync Port: 3.5mm Jack (with 6.35mm adapter)
• Transmitter Hot Shoe: Standard Hot Shoe (Non-TTL)
• Receiver Mounting: Cold Shoe Mount / 1/4"-20 Thread
• Material: Durable Plastic
• Operating Temperature: -10°C to 50°C
• Max Trigger Voltage: 12V

Recommendations

For best results, use fresh AAA batteries in the receiver and ensure the transmitter battery is installed correctly. The trigger is not compatible with TTL metering; it fires the flash manually. Always test the sync speed with your camera to avoid banding.