This review will focus on smart GSM sockets. GSM sockets are devices for expanding home automation. At the moment, the range of such outlets is quite wide, and it is not surprising that they have already gained some popularity among discerning consumers.

For example, consider three models from three manufacturers, so that anyone who hears about these devices for the first time can form a clear idea of ​​what kind of devices they are, how they work, and what opportunities they open up. Each of the models presented in the review is unique in its own way and has its own characteristics. This model is an improved version of the device from the Russian company Senseit. It supports management from an application for iOS or Android, and there is no longer any need to send SMS commandsas it was in the first version of the outlet ...

As the main or additional source of heat in modern homes and apartments often use an electric heated floor. Often - as an extra, and there is an opportunity to choose. It can be a continuous floor covering, or just a warm piece of a small area in the hallway. For small areas, for example, an ultra-thin heating cable is very convenient, and for large areas a single-core or two-core heating cable (it can go in the form of a mat or on a coil) is better.

The heating cable is mounted under a cement screed, the thickness of which depends on the type of cable. It is best to carry out installation even at the construction stage, or in extreme cases - during the overhaul process. If repair is not expected, then it is possible to install a warm floor from an ultra-thin cable, which is laid without thermal insulation in a layer of tile adhesive ...

Not a single thorough repair, perhaps, can do without the use of a drill. Many installation work also often involves drilling holes. However, not everyone has a tool in use when the situation requires it.

Let's figure out what a drill is, what its functions are and what the technical characteristics of a drill can be, so that everyone can get a suitable tool if necessary, without overpaying for unnecessary excesses. So, a drill is a manual power tool, the main function of which is drilling holes. Drill holes can be drilled in plastic, in wood, in metal, and even in concrete, but not every drill is suitable for concrete, but we will talk about this later. A modern electric drill is a universal tool, because a drill can optionally be installed in a chuck, therefore, the drill is also suitable for grinding ...

Along with home heating systems by means of boilers requiring constant fuel supplies, there is also a simpler heating method - using electric convectors. The name of the device (electric convector) speaks for itself - electrical energy is converted into heat, and heat, in turn, is transferred through the room due to natural air currents. So from the stationary wall convectors can be mounted a complete heating system for the home.

All electroconvectors are divided into floor and wall (stationary), but they are similar in design. These devices have a hollow metal body conducive to convection, in the lower part of which there is a low-temperature heating element equipped with a plate radiator. This is done so that the cold air entering through the lower inlets can be heated, flowing around the radiator of the heating element ...

When it comes to solving the problem of autonomous power supply, it becomes obvious that one uninterruptible power supply alone is not enough. For high-quality and long-lasting service of any such system, a reliable battery is also needed, capable of providing the required number of ampere-hours for the required time. An example of such reliable batteries are the batteries of the Chinese company MNB Battery.

These batteries are ideal for both UPS and power supply of any other modern equipment. They are made of modern materials and components, constantly improved, because it is not for nothing that MNB Battery is today one of the leaders in the market of independent power supplies. MNB batteries are made according to AGM and GEL technologies. The electrolyte, in the form of porous fiberglass, which is located in the battery housing, made by AGM-technology does not contain ...

In modern electric networks, power outages are by no means uncommon. For this reason, it is difficult to overestimate the importance of having a high-quality uninterruptible power supply in case of emergencies.

A very practical modern solution is voltage inverters, the purpose of which is to provide high-quality power supply in case of an accident.Such an inverter is powered by batteries, converting their constant voltage to alternating voltage, fully or partially compensating for the lack of power from the common network.

This is especially true for country houses, where not only lighting fixtures, but also heating and water supply can stop working without electricity. Boiler, pump, other automation - almost everything requires continuous power household appliances may fail...

Modern household appliances often have built-in surge protection in their power supplies, however, the resource of typical solutions on varistors is limited to a maximum of 30 tripping cases, and even then if the current in an emergency does not exceed 10 kA. Sooner or later, the protection built into the device can fail, and devices that are not protected from overvoltage will simply fail and bring a lot of trouble to their owners. Meanwhile, the causes of dangerous surge surges can be: a thunderstorm, repair work, surge during switching of powerful reactive loads, and you never know what else.

To prevent such unpleasant situations, surge protection devices (abbreviated as SPD) are designed that take on an emergency overvoltage pulse, preventing it from incapacitating electrical devices connected to the network ...

A traveler, a fisherman, a hunter, or just a person who likes to relax in nature, can never be sure until the end that he will not suddenly find himself in a situation where an important electronic device for him, be it a cell phone, GPS-navigator, echo sounder, or laptop will not be discharged at the most inopportune moment.

If this happens, then you can remain without communication, the idyll of the whole event will be violated, and anything can be threatened, up to human health. So, however, it was before the advent of portable chargers for mobile equipment. Here are car-lighter chargers, portable finger-type chargers, and even hand-held generators and small solar panels. Solar chargers, as an alternative to an environmentally friendly source of electrical energy, have gained particular popularity in recent years among consumers ...