Are you saying that you have 22 different devices each controlled via a WiFI controlled socket and an app?
YES. Also Bluetooth and Zigbee network, all mostly voice or scene controlled.
The ones you plan to use in future, dual channel, report your energy usage. But that's no god if you don't do anything about it.
CORRECT.
You say ROI is not important, but you are trying to save a few units of electricity using gadgets which costs Bht 399 each
INCORRECT. Implementing a further 4 smart devices. The new unit is 75% smaller, easier to install, and now comes with the energy consumption functionality embedded.
In UK they talk about Smart Meters will save you energy, but only if you reduce your consumption accordingly.
CORRECT