Welcome to our store! This set includes 1 transmitter, 3 receivers, and 1 sync cable. It operates on a 433MHz frequency with 16 independent channels. With a transmission distance of up to 30 meters, it boasts strong anti-interference capabilities and no directional or angular limitations. The universal hot shoe makes it suitable for Canon, Nikon, Olympus, Pentax, and other flash units with a universal hot shoe. The receiver trigger is powered by dry batteries and has a maximum synchronization speed of up to 1/250 seconds. Product Information: - Model: Metal+Plastic - Suitable for: Nikon SB-900, SB-800, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24; Canon 580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EX/EXII, 430EZ, 420EX, 420EZ, 380EX; Pentax AF-540 FGZ, AF-360 FGZ, AF-400 FT, AF-240 FT; Olympus FL-50, FL36; Sigma EF-500 DG Super, EF-500 DG ST, EF-430; Sunpak Auto 2000DZ, 622 Pro, 433AF, 433D, 383, 355AFm 344D, 333D; Yongnuo YN-460II YN-468 YN-560 YN-462 YN-465 YN-467 - Transmitter Battery: 23A 12V mini battery (included) - Receiver Battery: 2* 1.5V AAA batteries (not included) - Operating Frequency: 433MHZ - Outdoor Working Distance: up to 30 m / 90 ft (open area, barrier-free) - Indoor Working Distance: up to 25 m / 75 ft - Channel: 16 channels - Synchronization Speed: 1/250s - Color: Black - Package Size: Approx.10*10*4cm / 3.9*3.9*1.6in - Package Weight: Approx.148g / 5.2oz Package Includes: - 1* Transmitter - 3* Receivers - 1* Sync Cable - 1* English Manual Please Note: - Not suitable for Sony due to its special hot shoe. - This flash trigger does not support TTL. - Please allow 1-3cm error due to manual measurement, and make sure you do not mind before ordering. - Please understand that colors may exist chromatic aberration due to the different placement of pictures. - Please note that the new type and old type of this product will be sent randomly, and make sure you do not mind before ordering. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We do our best to provide you with satisfactory customer service.