Code Alarm CATXMLSS 5-Button 2-Way LCD Paging Replacement Transmitter Remote 915MHz FCC H50TR38 H5OTR38 Code Alarm 5 button 2-way LCD paging replacement metal transmitter remote (Replacement for CATXOLED) FCC ID: H50TR38 H5OTR38 (Replacement for H50TR24 H5OTR24) FHSS, spread spectrum technology (SST), 915MHz, USB rechargeable battery powered Programmable to the following models: CA5550SST, CA5553SST, CA6551SST, CA6552SST, CA6553SST, SRT9000 You will need to use the system's valet switch (programming/override button) to perform the programming procedure