1. Press and hold the [0] key

2. Enter your [installer code] (default: 000000) or [MAINTENANCE CODE]

3. Enter the desired [SECTION NUMBER] (4003 for Module Programming) 

4. Enter the RTX3 Serial number (00000000) 

5. Enter the desired [SECTION NUMBER] (To test signal strength [601] to [632]) (Zone 1 to 32)
                                                                 (To test battery life [701] to [732]) (Zone 1 to 32)