Dsan PC-SYS-AS4 PerfectCue System Wireless Slide-Advance Remote Control with PC-AS4 TransmitterThis DSAN Corp. PerfectCue System is a wireless audio and visual cueing system that can remotely control presentations such as PowerPoint slides, on either one or two computers. It includes a Cue Light wireless receiver and a PC AS4 transmitter with Forward, Reverse, Blank Screen, and Green Laser buttons. The wireless communication between the transmitter and the Cue Light receiver is reliable at 300'. PerfectCue enables a speaker to send cues to a