The PU-305BDA-KIT is an analogue Stereo over CAT5e/6/7 Extender kit which can send and receive analogue audio signals over a single run of CAT5e/6 cable up to 300m. It has the added benefit of RS-232 pass-through allowing control of devices. The Power over CAT function can used at either end, providing power the transmitter or the receiver unit eliminating the need for a second power supply. As the unit has bi-directional capabilities, each unit in the kit can send & receive audio signals.