To prevent access by children to “adult” or colecciones books stored in a shelf with sdvizhnye glasses will help ordinary furniture lock with retractable tongue and bent from steel strip. The thickness of the strips is determined by the gap between the panes.
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Protective sensor
Motion sensor DD-010 disassembled with the control board removed and an additional siren (100 dB sound level) type KPS-4510 connected. Motion sensors (DD) based on Fresnel lenses and...
THE PENCIL
What do we do when we need something to hang on a concrete wall? Bore a hole and hammering the tube, usually wood. And where is the guarantee that the tree got dried? Often, the tube...
