This document provides instructions for operating a home security system using GSM commands and passwords. It discusses: 1. The default passwords and commands to arm, disarm, and check the status of the system. 2. Notes on entering commands correctly with no spaces and checking for successful or failed operation messages. 3. Guidelines for ensuring the GSM panel has proper power supply and installation to allow normal function and SMS alerts. 4. Instructions for testing the system weekly and checking SIM card balance to maintain normal GSM operation.