…The baby was cranky for a long time and finally fell asleep. A few minutes later the doorbell rings. And, of course, the baby wakes up, and now to calm his unlikely…
I propose a simple addition to the doorbell. Just say that it’s good for calls that are switched through the circuit of 220 V. Here we need a cartridge with a bulb and the switch. Everything is connected as shown in the figure. In normal mode when you press the button is actuated and a bell, and a lamp in the “quiet” — only lamp.
I. GALKIN, engineer
Recommend to read
VELOSIPE
So your bike was more noticeable in traffic and stood in the Parking lot, put on his frame, several white streaks of oil or nitro. This "Zebra" is evident, wherever the bike, preventing,...
HELP WASHER
Undoubtedly, the plastic siphon for washbasin much better than cast iron. But the trouble is that they are not interchangeable. Throwing worn-out iron and putting plastic, we have...
