1. Press 
or 
until SYSTEM PROGRAMMING then press 
2. Enter Installer Code 4321 (Call Brinks Home Security if this code does not work)
3. Press or until SENSORS then press
4. Press again to place Simon XT in learn mode
5. Twist to remove Carbon Monoxide detector from base to learn
6. Simon XT beeps and Grp flashes, press button, enter group 34
7. Sensor name flashes, press or to scroll names then press to select
8. When finished press to save
9. Press STATUS several times to exit sensor programming
