This example is the answer to those who think that automation is something complicated and terribly expensive. A socket with a built-in motion and light sensor for $ 25 will allow you to comfortably enter the garage, pantry and other office space. And you do not have to worry about turning it on or off. The result is ease of use and energy savings.

This device allows you to change the level of illumination at which the light will turn on, the viewing angle of the motion sensor (you can get a maximum of 360 degrees) and the duration of the on (from 5 to 100 seconds). The socket is compatible with incandescent lamps up to 60 watts, and also supports economical 20-watt bulbs.

Static electricity arises from the inequality of charges (negative and positive) between two objects. When discharged, a spark arises. This process causes an irritant effect on the human body, sometimes quite noticeable.

How to minimize this shock? We must not forget and adhere to the following rules:

1. Limit contact between moving bodies. The body is a static charge collection point (initially blocked, with no exit), free electrons are collected. This is especially observed with friction (feet on the carpet, etc.).

2. Place a layer of cotton between materials prone to conduct static electricity ...