The UC7305R receiver is replaced by the UC7301R/RR7222T-KIT. If you purchase only the UC7301R receiver only, it will not work with your existing remote. You must purchase the Kit we recommend. If your existing remote is the TR171B or the UC7222T434, the UC7301R receiver will not work with it. If you need the remotes you can purchase them separately, however, if you need a new receiver you must purchase the kit, which comes with the new compatible remote (RR7222T).