Code Alarm CATX650 4-Button 2-Way LCD Paging Replacement Transmitter Remote 433.92MHz FCC H50TR13 H5OTR13 Code Alarm 4 button 2-way LCD paging replacement transmitter remote (Replacement CATX2LCD and CATX2LED) FCC ID: H50TR13 H5OTR13 (Replacement for GOH-PAN08, GOH-PAN09) AM, superheterodyne (SAW), 433.92MHz, AAA battery powered Programmable to the following models: CA140, CA170, CA540, CA640, CA650 You will need to use the system's valet switch (programming/override button) to perform the programming procedure