Model # 94-15092-00
What usually goes bad the transmitter or the repeater I don't know which to purchase Or can they be purchased together?
Hi. It's hard to say because they both can go bad. You can purchase the WPC-1 Upgrade Kit - 97-15037-00 which includes the Repeater, Transmitter, and Receiver.
how much cord does it come with?
Marty, The repeater has 10' of cord.