Flash Trigger SL Umbrella Holder 4 Channel PT-04 NE Apkina Dual & Single Wireless Trigger For Flash

Functionality: It’s a wireless remote control system designed to trigger external flash units or studio flashes for photography, working through frequency modulation (FM). Compatibility: It features a universal hot shoe interface, making it compatible with most camera brands like Canon, Nikon, Sigma, Olympus, and Pentax (excluding Minolta and older Sony models). Channels & Range: It typically offers 4 channels and operates on a globally universal 433Mhz frequency, with a transmitting distance of up to 30 meters in open areas. Components: The set usually includes a signal transmitter and one or more receiver triggers. Power: The transmitter often uses a 12V 23A mini battery, while the receiver(s) typically require 1.5V AAA batteries.