If the head of the screw to give with the help of nalilsya the form shown in the figure, then any attacker will not be able to turn. On such hardware it is recommended to set sensible things sailing and motor boats, hook locks.
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In an electric call management the second coil (see wiring diagram) is only used for a short. It excited low-voltage EDS, which is sufficient to power the bulb 2.5—3.5 V. They can be...
