1. Press SYSTEM SETTINGS then enter Master Code
2. Press SYSTEM TESTS then press SENSOR TEST
3. Activate all sensors, GC3 beeps and displays each activated sensor
4. When finished press twice or HOME button to exit
1. Press SYSTEM SETTINGS then enter Master Code
2. Press SYSTEM TESTS then press SENSOR TEST
3. Activate all sensors, GC3 beeps and displays each activated sensor
4. When finished press twice or HOME button to exit