For the following, understanding the operation of the switch is useful. A good explanation can be found at https://www.youtube.com/watch?v=VNYcD7MEp4A

Negatives:
1. Since the bulbs are LED, installation of the capacitor on the bulb terminals is required (only not needed for incandescent bulbs).
2. It requires great caution as the wires easily detach from the capacitor (I experienced this and was lucky to be able to fix it).
3. If you look at the (LED) bulb, you may notice flickering. This means that the capacitor does not completely eliminate flickering, which is a result of the switch's operation. It is difficult to perceive, but each person has different sensitivity. Personally, it limited me to installing the switch only for patio bulbs.
4. The capacitor is not the same as the Sonoff (shown in the video) and appears "cheaper." It seems that the discharge resistor, present in the Sonoff, is missing. Therefore, caution is probably needed when disconnecting (I don't know if it has the same capacity).

Positives:
1. It provides a solution if you don't have a neutral wire.
2. It is aesthetically pleasing and through the eWeLink application, the wifi indicator can be turned off (at night it shows prominently if the switch is, for example, near a television).
3. The eWeLink application (which is for Sonoff products) detects the switch and fully controls it.
4. By connecting the eWeLink account to Google Home, the switch can be operated with Google Assistant.
5. You can connect both channels so that they turn on/off together.
6. Successful firmware upgrade.

Finally, 2-3 wall anchors will be needed to support it - it does not fit "inside the box" like most regular switches