ZEMISMART ZigBee 3.0 Smart Light Dimmer review


The smart switches seem to be the preserve of Sonoff and to a lesser extent Meross. These are very good products but have two disadvantages for some users: they are connected to Wi-Fi independently (and thus can have an impact on network saturation not to mention server problems) and they do not have a dimmer function for a large part of them.

We have managed to find you a Switch that will meet the expectations of the most demanding users: the Zemismart ZigBee Smart Light Dimmer! A switch working with a ZigBee bridge (Hue, dedicated bridge or an Echo Plus or Show 2…) and in addition with dimmer (Dimmer for intimates).

Yes, Zemismart surprised us again with this new product which unfortunately is only available on the Zemismart.com brand website, at a price of 22 dollars with 40% OFF.

ZEMISMART ZigBee Smart Light Dimmer

ZEMISMART ZigBee Smart Light Dimmer: a switch that imposes itself

Our Zemismart switch is delivered in the brand’s own basic packaging: bare cardboard with a label but relatively strong. We have learned with this manufacturer not to be formal about packaging, which is not their priority. But as long as the products are of high quality, what is the problem? It is better than the other way around.

There we find the switch, a small bag with a screw and a quick installation guide in English and German. The latter is very basic in the sense that it does not really explain the meaning of the LED colors or the reset function, that would have been a plus. On the other hand, it is very well suited for pairing modalities with an Echo Plus (or Show 2), a Philips Hue bridge, an Osram Lightify Hub or the Nue Home Bridge.

When you take the switch in hand, you quickly realize that it is a beautiful baby: it is relatively imposing! Count 11 cm long, 4 wide and 2.6 thick and more than 25g on the scale. Compared to Meross and Sonoff, it is between 1.5 and 2 cm longer than the latter and 0.2 to 0.6 cm thicker but slightly narrower (about 0.5 cm less). Be careful to measure the place where you want to put it, especially since the design is not extra because, let’s remember, this type of product is made to be hidden in a ceiling or ceiling light. This large size may be due to the dimmer function not provided by other switches of this type.

Unlike its competitors who have at one end the finish and at the other the output of the electrical connection, there, Zemismart has chosen to put everything at the same end with only 3 plots: the two neutral ones together and one plot for each phase. Given the length of the product, this can be an advantage. The switch has an LED at the opposite end giving its connection status as well as a physical switch that will serve you in case of a Wi-Fi failure for example. The arrival of the wires will be hidden with a small plate to come and screw on. Also note the existence of a hole in the wiring system in case you want to attach your switch to the wall or ceiling.

Now let’s look at the characteristics of the beast. They are quite standard and in the average of the market: 100 – 250 V, 50/60 Hz, operating between -20 and 60°C, which for an interior should be sufficient, max 80% humidity. However, no amperage announced but directly the maximum number of Watts supported: 300. if you put it on a ceiling lamp or a row of spotlights, look carefully at the power of your different bulbs and add them. We also know its power consumption, which is a maximum of 1.5 W/H. We will not insist too much on dBm (decibel in relation to milliwatt) which is a power measurement used for radio networks among others. And, importantly, it is FBee® Inside, i.e. it works in ZigBee 3.0, the latest version of the protocol. So a big strength, no overloading of your Wi-Fi network. And of course, it’s a dimmer! However, be careful, if you want to use it fully, your bulbs must be dimmable because it does not work with standard bulbs.

ZEMISMART ZigBee Smart Light Dimmer: Installation and pairing

ZEMISMART ZigBee Smart Dimmer

This switch will be placed in a ceiling light, behind a wall, a false ceiling… In our case, we decided to put it in a ceiling light supplying 3 GU10. Its large size does not prevent it from coming to be inserted, which is a pleasant surprise. The connections are quite simple but cut off the power supply before tinkering with everything.

So, identify your neutral and your phase of the circuit, and the same goes for the rest of your connection (in our case, the phase and neutral of the ceiling light). The two N’s go in the same plot and the phases in L1 and L. It’s not more complicated. You may need to use transplants to close your circuit.

Matching with Alexa is as simple as possible. You can do this in voice mode by asking him to search for new devices.

Review conclusion

This ZigBee switch is another great surprise from Zemismart: a dimmable ZigBee switch, easy to install and responsive. Its negative point remains its size, but also the fact that it is not easy to find at the moment.

Another strength of this switch is also that if you turn off your wall switch while the switch is in the Off position, when it is turned back on, it will automatically switch to the On position, so it will turn on your lights. This is not possible with a Meross but possible with a Sonoff as long as you go to the settings.

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