Code Alarm CATX1WAY 4-Button Replacement Transmitter Remote 433.92MHz FCC GOH-PAN05 Code Alarm 4 button replacement metal transmitter remote (Replacement for CATX110, CATX120) FCC ID: GOH-PAN05 AM, superheterodyne (SAW), 433.92MHz Programmable to the following models: CA140, CA540, CA640 You will need to use the system's valet switch (programming/override button) to perform the programming procedure