Rezvun-9 DIN rail installation and functional test
We're installing a light and sound alarm on a DIN rail. We're using an empty plastic box module with a capacity of two modules.
Next, we'll test its operation as a 220-volt power loss alarm.
I'll use this circuit in my summer house's electrical panel.
Details and the circuit diagram are available on the website: http://www.snthouse.ru/67-rezvun-9.html