Why Use a Hardware Power Manager? A hardware power manager is essential for the Raspberry Pi due to its lack of a built-in power management system similar to traditional PCs. Rapid power loss or improper shutdown can lead to SD card corruption, data loss, or even hardware damage. A power manager ensures that the Raspberry Pi powers down safely when necessary, avoiding these risks. 

Use Multi-functional Wi-Fi enabled timer with custom firmware to create RPi power manager.

It is easy to connect. Connect power to the timer, connect GPIOs from Raspberry Pi to the timer. Put timer into the configuration mode and configure via phone or table. That is it.