The Russian company EKF, known to everyone connected with the electrician, began to produce smart home components, including lamps and fixtures.
I studied them and measured the parameters.
All devices are Wi-Fi controlled and built on the Tuya platform. They can be controlled through the EKF Connect application (adding and managing through Tuya Smart, Smart Life applications or applications of other Russian brands also works).
In the EKF range now five types of lamps (637-1349 rubles), three-meter tape (2249 rubles) and five ceiling lights (3499 - 11999 rubles).
All devices allow you to control the brightness and change the color temperature (set "warm" and "cold" LEDs, the combination of light of which makes it possible to choose any intermediate color temperature of light).
Three types of lamps and a ribbon are equipped with additional RGB LEDs, thanks to which the light can be colored.
The tape is additionally equipped with an IR remote control that allows you to change modes without an application on your smartphone.
The remote has buttons for turning on, off, changing brightness, selecting a color temperature and its smooth adjustment, selecting a color and smooth change, as well as buttons for enabling two modes of continuous color change, night mode and off mode after 60 seconds.
EKF has five smart lamps:
"Pear" 806 lm 2700-6500K RGB (637 rubles) - replacing an incandescent lamp 75 W;
Filament "pear" up to 725 lm 2300-5900K (974 rubles);
"Candle" E14 400 lm 3000-6500K RGB (637 rubles) - replacing an incandescent lamp 40 W;
Spot GU10 500 lm 2700-6500K RGB (749 rubles) - replacement for a 50 W halogen lamp;
Spot GX53 430 lm 2700-4000K (1349 rubles).
The filament lamp has yellow glass and allows you to get "super-warm" light of 2300K, however, it can also give ordinary white light 2700-5900K.
The luminaires are identical in shape and capabilities, differ in diameter (230-600 mm) and power (18-45 W).
For fastening, a plastic disk is used, on which the lamp is put on and fixed by turning.
The control interface for lamps and luminaires is slightly different: for lamps and a tape to select a color temperature, the marker moves around the color scale, for lamps the marker moves along the color rectangle, additionally there are color presets temperatures.
Of course, all additional features for managing tuya devices work: scripts, "dawn" mode, "color music" mode and others.
There is a choice of state when turned on, as well as a biorhythm mode, in which the color temperature of the light changes smoothly throughout the day.
I measured the parameters of all lamps and fixtures. Let's start with lamps.
All lamps have high color rendering indices (CRI (Ra) not less than 83). The pear lamp has "cold" LEDs with CRI 95. The minimum color temperature of this lamp turned out to be about 3000K, and not 2700K, as stated.
Spectra of the same lamp in color modes.
The power and luminous flux of all lamps are close to those declared. The filament "pear" consumes maximum power and gives maximum brightness only in the 3400K mode, when both types of filaments operate at full power. The second batch of these lamps will soon be on sale (release date 2022), where the power consumption and luminous flux are the same in all color temperature modes.
All lamps have practically no ripple at maximum brightness. Invisible to the eye ripple appears at minimum brightness only in the filament pear (10-17%) and spot GX53 (10-11%).
All lamps work correctly when the mains voltage drops to 207 V (according to GOST, the mains voltage should be 230V + -10%, that is, from 207 to 253 V). The voltage at which the luminous flux drops by 5% is indicated in the Umin column. I conducted this test in the mode of maximum brightness of neutral light.
I do not have the technical ability to measure the luminous flux of large lamps, so for them and the tape only the power and light parameters were measured. The power consumption of the tape was measured from a 230 V network, since the tape with a power source and a controller is sold as a single product.
The measured power consumption of the tape together with the controller and power supply did not exceed 11.3 W, which is significantly less than the indicated 18 W.
Color rendering indices are high (CRI(Ra) 88-90).
There is no pulsation at maximum brightness of the warmest and coldest light, when the colors are mixed, a a small ripple of about 5%, with a minimum brightness, the ripple coefficient in different modes is 16-21%, visually it imperceptible.
Measured parameters of luminaires.
The power of all lamps is close to the declared one. Color rendering index CRI(Ra) 81-85. Ripple is practically absent in all modes.
The largest lamp works confidently without changing the brightness at a voltage of 200 V, the rest work at lower voltages (the Umin column indicates the voltage at which the brightness drops by 5%).
The lighting angle of the lamps is about 120 degrees, so it is desirable that such a lamp should not be the only source of light in the room (if there is one, the ceiling will remain dark, which visually unpleasant).
All lamps and fixtures have a 3 year warranty. They can be bought at Ozone, Wildberries, Yandex Market.
A big plus of EKF lamps and luminaires is the use of the most popular Tuya cloud platform, thanks to which lamps can be manage together with devices from different manufacturers from a single application, as well as using all voice assistants.
Peace for everyone!
© 2022, Alexey Nadezhin
For twelve years I have been writing about technology, discounts, interesting places and events. Read my blog site ammo1.ru, in Learn, Zen, Mirtesen, Telegram.
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