Smart Home Monitoring Without Internet: Using Android and Termux for SMS Alerts

This article explores a method for independent Smart Home system monitoring using a standard Android smartphone. The author proposes a solution to track home automation status, such as Majordomo, without relying on an internet connection. The core tool used is the Termux terminal emulator, which enables sending SMS and making calls over a cellular network during critical events. The system's algorithm is straightforward: upon detecting an issue, the device sends sequential SMS alerts followed by a phone call. This approach provides a reliable communication channel independent of home Wi-Fi or wired internet stability, which is crucial for security and environmental monitoring systems. By leveraging basic mobile telephony functions, an old smartphone is transformed into an effective, autonomous notification module, enhancing the capabilities of standard automation platforms.