Comparison Schneider Sedna SDN3000121 white vs Schneider Asfora EPH3300121 white

— Electric. The connection is represented by a plug connection. This is an ordinary plug that is attached to the current-carrying wire of the consumer of electricity. There are many types of power outlets. Both single and double (triple) models are widely used. Manufacturers of electrical equipment offer traditional and "smart" (smart) sockets. Some models of classic (traditional) sockets are equipped with a built-in programmer.

— Computer (RJ45). The computer socket uses an Ethernet connector, under the RJ45 connector. With its help, you can connect computer or other digital equipment to a local network (home or corporate) and access the Internet. Usually, sockets of this type are mounted next to the desktop or in the place of stationary placement of digital / peripheral equipment. Often a computer outlet is used to connect cable television or IPTV. The vast majority of models use a built-in design (flush-mounted), although some electrical manufacturers still produce surface-mounted outdoor RJ45 sockets.

— Telephone. Telephone sockets use an RJ11 or RJ12 connector. With the help of sockets of this type, stationary city telephones are connected, as well as devices of an internal telephone line (corporate). Additionally, telephone sockets can be used for ADSL Internet connection. Usually, models of this type are mounted near the installation site of fixed telephones, as well as routers...(routers) with an ADSL connection.

— Computer + phone. Combined sockets. The contact group, as well as the front decorative surface, is designed to install several different types of connectors (RJ45 + RJ11), more details about each of them can be found in the relevant paragraphs. Sockets of this type are often installed near the desktop.

— Computer + TV. The socket is equipped with heterogeneous interfaces: RJ-45 and coaxial TV connector. Designed for installation next to a multimedia entertainment system, which necessarily includes a TV and auxiliary digital/computer equipment (game console, media player, etc.). The TV connector is used to transmit a television signal, and the RJ-45 interface is designed to access the Internet or connect to a local network. In some cases, an RJ-45 computer connector can be used to transmit an IPTV television signal.

— Electricity + USB. Sockets of this type are designed for both traditional plug-in connection and connection using a USB port. The plug + USB combination allows the product to serve a wide range of devices, including gadgets and digital devices, which often do not have a fixed current-carrying wire with a plug.

— USB. USB sockets are designed to charge smartphones, tablets and other computer/digital devices. Depending on the specific model, the product may have 2-4 USB connectors for connecting several devices at the same time. There are models on the market for both flush-mounted and surface-mounted installations. Often, a USB connector is combined with a traditional plug connection (combined sockets).

— HDMI. The HDMI (High-Definition Multimedia Interface) interface is designed to transmit high-definition multimedia data. An HDMI socket allows you to neatly and practically connect the elements of a home theater or entertainment centre — it can be a large-screen TV and a computer. Usually, they are mounted in places where the screen and media library server are permanently placed. The vast majority of models are built-in and installed in mounting boxes.

— Audio. Audio sockets allow you to aesthetically, reliably and safely connect the main elements of the sound path of a home theater, stereo or multimedia system. Using audio sockets, you can connect speakers to an amplifier or directly to a sound source (player, music centre, DVD player, etc.).

— Audio-video (AV). Sockets with composite RCA connectors for audio and video signal connection. At this time, in the era of digital devices, it is considered an outdated way to connect AV equipment.

— Television TV. TV is a terrestrial television broadcast transmission standard. Television sockets TV use an analogue signal received from a radio antenna, which can operate in both the metre and decimetre frequency ranges. When choosing a socket of this type, the type of electrical accessories should be taken into account. There are through and end sockets. In addition, it is necessary to take into account the connection scheme (stub or "asterisk").

— Television SAT. SAT is an interface for transmitting a satellite television signal. SAT television outlets use a digital signal from a satellite dish. The SAT broadcasting standard operates in the 950-2400 MHz frequency range. Usually, the SAT signal is broadcast without interference; if the satellite signal strength is insufficient, the channel is blocked. There are pass-through and terminal SAT-sockets. The SAT interface is often combined with other television and radio broadcasting connectors, TV and R.

— Television TV-SAT. Combined sockets that allow you to use the signal from both traditional antennas for terrestrial broadcasting (TV) and satellite dishes (SAT). Television sockets TV-SAT are most often installed on those objects that are equipped with various types of antennas (metre / decimetre + satellite). They can be both passing and terminal. The tandem of TV-SAT interfaces can be supplemented with a connector for connecting FM/AM radio.

— Television TV-R. TV sockets TV-R work both with a signal from a classic metre / decimetre antenna, and with a signal from an AM / FM radio antenna. It is advisable to use the TV-R socket when the TV, player or receiver is equipped with a radio tuner. There are several types: through and terminal. TV outlets can be additionally equipped with a SAT satellite connector.

— Television TV-R-SAT. The combination of TV-R-SAT interfaces involves the use of signals from a metre / decimetre antenna, an AM / FM radio antenna and a satellite dish. Combined TV-R-SAT sockets are designed for installation in those facilities where a complete set of television and radio broadcasting antennas is used. When choosing a TV-R-SAT socket, you should pay attention to the design of the electrical fittings. There are through and end models.

— Socket (module assembly). The assembled module assumes the use of both an electrical contact group and a decorative panel (front frame). Some sockets are additionally equipped with a mounting box. Assembled sockets are completely ready for installation in a mounting box. Electrical fittings of this type are convenient in that when choosing it, there is no need to separately select the front decorative panel.

— Socket without a frame. Sockets without a frame are equipped with an electrical contact group and a front decorative panel, and the user must order the front decorative frame separately. Usually, frameless sockets are ordered when certain requirements are imposed on the design of electrical fittings. Thus, the customer has the opportunity to choose the version of the front panel that will most successfully harmonize with the interior of the room where the socket will be mounted. Manufacturers of frameless sockets also offer a wide range of individual faceplates that are fully compatible with the electrical contact group.

— Mechanism only. The socket is represented only by an electrocontact group and is devoid of a front decorative panel. This option is more suitable for cases where the user already has a front panel that is fully compatible with the design of the electrocontact group. Some socket manufacturers offer a wide selection of front de...corative panels for their products, so you can choose various lining options for a separately sold electrical contact group. In this case, the user has the choice of which decorative panel to install on the socket so that its design matches the interior of the room.

- Checkpoint. Pass-through TV sockets use a more complex connection scheme than classic terminal counterparts. The pass-through TV socket has an additional contact that allows you to transmit an antenna radio signal to an additional TV socket. Models of this type are used when two or more TVs work from one antenna. Of course, the quality of the antenna signal will decrease from outlet to outlet. As a rule, walk-through TV sockets are capable of serving up to 3-4 TVs from one antenna.

- Terminal. Terminal TV outlets use the simplest type of connection - one end-type television outlet serves one antenna. Designed for those objects where only one TV is used. TV sockets with a terminal device are distinguished by a high quality of antenna signal transmission. Often, these models are combined with plug-in counterparts, as well as USB and Ethernet (RJ45).

- Individual. An individual television socket is used to serve one single connection point; it will not be possible to transmit a signal from it to further connection points, as in the checkpoints. A model of this type also differs from terminal electrical accessories - if the terminal socket completes the radio signal distribution line between two or more connection points, then the individual one works to serve only one single connection point.

— Individual Male. Marking male ("father") indica...tes the type of contact connector. The male part is represented by a male connector. In the past, all television sockets were equipped with a male connector. Today, there is a large selection of sockets with a female connector (“mother”). When choosing a TV outlet with a male connector, you need to make sure that the TV cable will support a similar connection scheme.

- Individual Female. The marking female (“mother”) indicates the type of contact connector, which in this case is represented by a female contact. Television sockets with a female connector have appeared relatively recently. The standard is considered to be sockets with a male contact, and the departure from the standard was dictated more by marketing considerations, that is, in order to expand the range of electrical accessories. A TV socket with a female contact should be ordered if the original TV cable provides a suitable connection to the antenna.

The fading effect is expressed in the weakening of the television signal. Attenuation is calculated in decibels (dB) for every 100 meters. The higher the attenuation value, the less quality the antenna signal will have when it is output to the TV. Terminal sockets have the lowest attenuation value, while through sockets use a more complex connection scheme, which leads to a multiple increase in the attenuation of the antenna radio signal.

The exact value depends on the signal transmission range, as well as the quality of the wire itself, connecting the antenna to the outlet. It is generally accepted that an antenna radio signal with an attenuation of 1-3 dB has the proper quality. But pass-through television outlets often have attenuation values of 10-15 dB and even more.

Sockets with grounding are intended for maintenance of industrial machinery and other equipment. The plug of equipment that requires grounding has an additional contact surface (grounding). Thanks to grounding, the socket protects the serviced equipment from short circuits and other power outages. To install models of this type, it is necessary that the electrical switchboard is equipped with a working ground terminal, and the power cable has an auxiliary conductor connected to ground in the switchboard.

The current strength of the outlet determines how powerful the equipment it can power. A standard 16 A household outlet allows you to safely service equipment up to 3.52 kW. The maximum power of consumers is calculated by the formula: network voltage (220 V) * socket current.

In the past, standard household outlets used an amperage rating of 6.3 A. But over time, more electrical appliances have been used in homes, forcing manufacturers to raise the standard amperage rating. If you connect a splitter (carrying device) to a 16 A socket that serves equipment with a total power of over 3.52 kW, the socket may melt.

Sockets with a rated current of 25 and 32 A are intended for installation in production and industrial facilities. Typically they use a 3-phase 380 V network.

The value of the maximum power of the outlet determines the total power of consumers that are powered from it.

This parameter is inextricably linked with the rated current of the outlet. So, an ordinary household socket with a rated current of 16 A is capable of servicing equipment with a power of up to 3.52 kW. The maximum power is determined by the formula: voltage (230 V) * rated current. So, for example, W = 220 * 16 = 3520 W. If more powerful equipment is connected to an outlet with a maximum power of 3.52 kW, the outlet will melt.

Protective shutters block free access to the electrocontact group. To use an outlet with curtains, the user must first remove the curtains themselves. Models of this type are mainly intended for installation in facilities where there are small children. Protective curtains prevent cases when a child sticks thin metal objects (hairpins, needles, knitting needles, etc.) into the plug holes.

— Screw. A screw connection involves fixing each wire with a special plate, which is pressed against the bare part of the wire under the action of screwing in a bolt (screw). This type of connection, although considered obsolete today, is still often used even by manufacturers of advanced electrical accessories. The screw-type clamp allows you to control the clamping force of the wiring, but due to temperature instability, the threaded connections of the electrocontact group are subject to self-unwinding. This moment leads to a weakening of the clamping of the wiring and deterioration of the contact.

— Clamp. The self-clamping terminal fixes the bare part of the wire due to the force of the stretched spring. To connect the wire, you must first press the tab of the terminal clamp by hand, and releasing the tab, the clamp will securely fix the contact part of the wire. Wiring with clamps is considered a more modern and reliable solution than the classic screw fixing method, since the terminal clamps are not subject to self-loosening. Among the shortcomings, one can single out the impossibility of controlling the clamping force.