You have returned home or moved from room to room. Opening the door, clicked the lock handle and then light lit up. Comfortable? And the secret is this. Attached to the handle bracket presses the button of a pushbutton connected to the network switch. Turn it on and when you close the door, press again, wait a handle to a push-button switch opens. Device to turn the light on the door handle:
1 — push switch, 2 — clip, 3 — handle, 4 — corner fastening buttons, 5 — door, 6 — room switch.
S. DYACHKOV, Novovyatsk, Kirov oblast
Recommend to read
NOT THE RING FINGER
Sometimes it is difficult to remove on finger tight ring, but much harder — pressed on the shaft bushing or bearing, Not accidentally creating a variety of devices. One of such devices...
AGAIN ABOUT BIOGAS
The editors have received many letters on the publication of "Biogas: and warms, and cooks" (see "M-K" № 1, 1987), based on the materials of the Romanian journal "Technium". Of readers...
