Control electrical devices by SMS

This small device, which is less than 5 cm in length, controls 7 electrical devices only by SMS.
The most prominent use of this device is to operate the pumps in remote forests, for this purpose I have added a very beautiful and useful feature which is the timer, that is, if you want to run the pump every day you will not have to send a message to turn it on and off with messages, you only need one message in which you specify the pump number and the time you want Turn it on and the time you want it to work and send it, the device will store time even if you turn off the device and turn it on, it will keep that time, the pump will run every day at the same time, and for the sake of confirmation, the device will send a message when it works and when it is turned off to inform you of that and the device can be used for other purposes Other than the pumps, of course the device cannot operate the pump directly, as its maximum bearing is 25V and 50A. Therefore, to operate devices with higher consumption, an external Relay must be added.