Check the listing for details. Paul C. Buff CyberSync Remote Receiver CSRB+ 2.4GHz Wireless Flash Trigger Black. Color: Black, Condition: Used, Made in United States. Listed at 59.99 USD. Paul C. Buff CyberSync Remote Receiver CSRB+ provides reliable wireless triggering for studio flash units at a 2.4GHz frequency. It includes a test/power button with a status indicator light and a remote port for easy connectivity. Designed for use with AA alkaline batteries, it offers a portable solution for off-camera lighting setups. Brand: Paul C. Buff Model: CyberSync CSRB+ Type: Wireless Flash Receiver Frequency: 2.4GHz Power Source: 2 AA Batteries Connectivity: RJ11 Remote Port Country of Manufacture: USA Color: Black Material: Plastic Features: Status LED, Test Button Keywords: Photography, Studio Lighting, Trigger, Wireless, Off-Camera Flash, Strobe, Sync, Professional, Gear, Radio Slave