UCF recommends only Radio Frequency (RF) systems. One of the major advantages of using RF is that such devices do not require line-of-sight. This allows the receiver to receive a response regardless of where the remote is pointing.
Infrared (IR) devices must be carefully positioned for line-of-sight to all student key pads, and they only allow one response at a time. For example, if an IR receiver obtains two responses at the same time, one will be terminated and the other will be received, causing data collisions. With RF technology, no response will be dropped or ignored, which assures students that regardless of where they click and when, their answer will be accepted.
The communication range of the receiver using RF technology is generally much larger than that of IR devices, perfect for larger classrooms. However, because of its large communication range, RF devices may conflict with other RF devices if not compliant with RF standards. The CRS devices UCF supports are compliant with RF Standards and designed not to interfere with other wireless devices.
