Operation indicator
The presence in the design of the surge protector of a special indicator (usually in the form of a light bulb) that indicates that the device is turned on.
This function provides the presence of at least one common indicator; and on models with switches per outlet (see below), additional indicators can be installed on the outlets. Anyway, such equipment makes working with the surge protector more visual, allowing you to immediately assess the status of the device and avoid some unpleasant situations (for example, imaginary equipment breakdowns — when a “faulty” device does not work just because the filter is not turned on).
The indicator can be installed directly in the switch (general or for each outlet, see the relevant paragraphs for details).
USB A
The number of
USB ports for charging, provided in the design of the surge protector.
Such ports do not perform any other function than powering and charging external devices such as smartphones or tablets. The presence of such connectors in the surge protector can be especially convenient when there is no “230-to-USB” adapter at hand, and there are few USB ports in a computer or laptop and using them for charging is “an unaffordable luxury”.
Max. charging current
The current output by a USB connector when a charging gadget is connected to it.
The higher the current, the faster the battery can charge. However, when choosing, note that in order to use a high current strength, the connected device must also support it. Basically there are
USB with a current strength of 2.1 A,
2.4 A and
3 A.
It is also worth noting that when using several USB ports at the same time, the current strength is significantly reduced.
Power (with 1 device)
The maximum power that a USB port can produce when connecting only one gadget.
Higher power output speeds up the charging process. At the same time, there are a number of nuances associated with this parameter. Firstly, the appropriate power must be supported not only by the port, but also by the gadget being charged - otherwise the speed of the process will be limited by the characteristics of the gadget. Secondly, to take full advantage of the capabilities, you may need to support not only the appropriate charging power, but also a specific fast charging technology. Thirdly, in filters with several charging connectors, the maximum power per device can only be achieved if the other ports are not used.
Power (all ports)
The total power provided by the device when charging through all USB ports simultaneously.
When assessing this parameter, two points should be taken into account. Firstly, when fully loaded, the power of each individual port may be below the maximum possible value. For example, some models with 2 USB ports of 3 A and 2 A (15 W and 10 W), with both ports operating simultaneously, can output only 10 W per each, that is, only 20 W in total (this is the number indicated at this point). Secondly, the power distribution across individual connectors may be different, depending on the current on each port and the supported fast charging technologies; It is best to clarify these nuances using official documentation.
Wall mount
Availability
of fastening on a wall in a network filter design. Such fastening most often has the form of a characteristic eyelet (loops), designed to be put on a nail driven into the wall or other similar detail. And the installation on the wall itself is convenient in that the filter can be quite close to the user, and besides, it does not take up space on the floor (which, among other things, minimizes the risk of stepping on the device, damaging it during cleaning, etc.) .
