Feature: 1. Working frequency is 433MHz, the maximum synchronization speed is up to 1/250s, and the maximum working distance is 30 meters. It is suitable for 360‑degree professional shooting in different environments. 2. Adopts AC power supply, durable, equipped with a conversion head, freely switchable between 6.5mm and 3.5mm plugs, which expands the scope of use and is convenient for more studio flashes. 3. Strong compatibility, the transmitter adopts a single contact design, which is widely used in for Canon, for Nikon, for Sony and other cameras. 4. 4‑channel design, strong anti‑interference ability. A good and wise choice you should make. 5. Easy to use, without any difficult requirements even though you use it for the first time. Specification: .Item Type: Flash Trigger Material: Plastic Weight: Approx. 138g / 4.9oz Transmitter Battery: Built-in 23A-12V Battery 50mAh (Shipped with Built-in Battery) Receiver Power Supply: AC110-240V Channel: 4 Working Distance: 30m (Maximum) Working Frequency: 433Mhz Synchronization Speed: 1/250s Conversion Plug: 3.5mm To 6.5mm Adapter Scope of Application: Studio Flashes of Different Brands Package List: 1 x Transmitter1 x Receiver1 x Adapter 1 x Flashing Wire1 x Manual Note: 1. Do not disassemble without authorization. Repair or modify this product without the authorized maintenance personnel of our company. Do not repair it by yourself, otherwise it will be deemed as a voluntary waiver of the warranty service.2. Do not place this product in direct sunlight or high temperature. Do not expose this product to rain or splashes in humid and dusty places. At the same time, prevent metal parts or sand from entering the fuselage.3. Do not touch the switch of the connection line with wet hands. When removing the plug, please apply force to the plug instead of the connection line. When the connection line is found to be damaged, please stop using it immediately.4. Do not use this product in a high temperature, humid, flammable, explosive environment or an environment with a lot of dust.5. Don't let children play with this product when storing it, keep it out of reach of children.6. Only use the batteries listed in this manual, do not mix old and new batteries.7.Please install the battery in the direction of the positive and negative poles of the battery.8. When the product is not used for a long time, or the battery is exhausted, please remove the battery.