A visitor to our website recently asked about a replacement one-way remote transmitter for his Audiovox Prestige XRO9100 car alarm system. The correct part is Audiovox part XRO-91P with FCC ID H5OT35, Remotes Unlimited part 077-6496, which can be seen and purchased at the following link: RUI Part 077-6496
Two-way systems that use part XRO-91P, may also use two-way remote transceiver XRO-92P (RUI part 099-2630). This part has not been available from Voxx (Audiovox) for some time. As of the writing of this entry, Remotes Unlimited does have 1 pre-owned XRO-92P part in stock, which can be seen at the following link: RUI part 099-2630
Systems using either of these key fobs can be programmed by a consumer to add the new transmitter/transceiver. In doing so, it is important to have a working valet (cut-off) switch, and also helpful to have a working siren to be able to hear the feedback signals (chirps) emitted by the control module during programming.