Never used! Up for sale is a PAUL C. BUFF CyberSync Remote CSRB+ with its companion CST, booklet, cables, and accessories. This remote receiver operates on a 2.4Ghz frequency and is powered by 2 AA batteries. The black color and compatibility with Paul C. Buff brand make it a great addition to any photographer's lighting setup. The model number is CSRB+ and CST. This item has never been used and is in excellent working condition.