Comparison Xiaomi Yeelight Smart Bulb M2 LED Mesh vs Xiaomi Mi LED Smart Bulb Warm White

The power consumed by the light bulb during normal operation. The lower this indicator, the more economical the model and the cheaper it will cost to operate. In traditional incandescent lamps, the brightness of the glow also depended on the power, however, different types of lamps are presented on the modern market, with different efficiencies. Therefore, it is possible to uniquely link the power consumption and brightness only in lamps of the same type (see above), and to compare different types of models, you need to use the LON analogue (see below).

The conditional "amount of light" produced by a light bulb in normal mode. The higher the luminous flux, the brighter the light and the more clearly the illuminated scene will be visible. Note that lumen values are used primarily for special purposes; in everyday life, the estimation of brightness by the analogue of LON is more popular (see above), and here the ratio is as follows:

— 40 W analogue LON corresponds to a brightness of 370 lm;
— 60 W — 550 lm;
— 75 W — 800 lm;
— 100 W — 1200 lm;
— 150 W — 1900 lm;
— 200 W — 2700 lm.

Note that the principle "the more the better" in the case of the brightness of light bulbs is not always applicable. And the point here is not only energy consumption: too bright light is harmful to the eyes, leads to rapid fatigue and psychological discomfort.

This parameter describes the general coloration of the light of the lamp in "warm" or "cold" tones.

Initially, colour temperature is the temperature (in kelvins) of an object at which it begins to glow in a certain colour. Interestingly, the higher its value, the more “cold” the colour is: for example, the dull red glow of a heated metal corresponds to 800-1000 K, and the bluish-white tint of a fluorescent lamp corresponds to about 6000 K.

The temperatures encountered in modern light bulbs can be described approximately as follows:

2700 – 3000 K — "warm" white light, similar to traditional incandescent lamps;
3000 – 3500 K — "slightly warmer than average";
3500 – 6000 K — neutral white, similar to daylight;
More than 6000 K — cold shades of white.

Note that the colour temperature is not directly related to the quality of colour reproduction provided by the light of a particular lamp — much depends on the features of its design and, accordingly, the spectral colour balance.

Ability to control the lamp from a smartphone or other gadget, such as a tablet.

Models with this function are called smart lamps, they are, among other things, well suited for smart home systems. To communicate with the control gadget, such a lamp is equipped with a Bluetooth or Wi-Fi module, and a special application must be installed on the gadget. As a rule, such an application allows you to at least adjust the brightness, and in RGB models (see "Type") - also the color; however, additional features may be provided, including very unusual ones - for example, work in color music mode.

Apple HomeKit -enabled light bulbs are compatible with software used in Apple's smart home eco-system. First of all, thanks to this, the operation of the light source can be controlled from an iPhone, iPad / iPod or even a MacBook. The HomeKit application opens up fairly wide possibilities for setting up lighting modes, allowing the user to change the colour shade and intensity of the light bulb, programme its operating time, etc.

The device supports the ability to integrate with the Google Home smart home eco-system, as well as control from smartphones and tablets with the Android operating system. Using Google Home, you can easily and easily adjust the glow parameters: colour gradient, luminous flux, operating time, etc. Proprietary software allows you to create profiles with preset glow parameters — this can be a profile for workflow, relaxation, watching movies, etc. Distinctive A feature of the Google Home system is the presence of the Google Assistant voice assistant.

The operation of light bulbs with voice assistant support can be controlled using voice commands. The most widely used voice assistants are Apple Siri, Microsoft Cortana, Amazon Alexa and Google Assistant. Most often, the voice assistant interacts with the Smart bulb through a special application. This can be Google Home, Apple HomeKit, etc. That is, the user sends commands to the software on his portable computer/mobile device.