Simple small device, easy to connect and set up. I use one in inch mode to remotely start my Desktop PC so that I can access it with my Laptop when away from home. I use another in inch mode to activate a 12volt lock that opens a small safe.
These were replacements for Arduino UNOs that did the same job with a lot more complications and needed programming.
The pictures below show the complicated Arduino setup compared to the so simple Sonoff that achieves the same result.

Soso - Updated review

After my previuos review due of troubles with the micro USB connector and high noise level,
Itead kindly sent me a replacement of the Airspy R2.
Now the bad contacts with the micro Usb port disappeared and the noise floor is almost as the Airspy HF+ Discovery.
I also ordered the Airspy Spyverter to expand the frequency coverage.
Now I am very satisfied of the radio.
Thank you Itead for the top customer service, definitely a five star product!

Francesco Di Giovanni,, IN3XZP

Works well with Home Assistant. Updating firmware was easy.

Funzionamento impeccabile e durata batteria

Arrivato in 20 giorni. Usata con home assistant subito riconosciuta. Ottima copertura. Soddisfatto

We use it to easily activate scenes on HomeAssistant. Device was discovered at first try by the Sonof USB Dongle Plus, and I could define scenes for single push, double push and long press. Also publish information about the battery, which still is at 100% after a month of use. I can recommend this button for it´s size and functionality (really comfortable, even for small hands)

Device has been working pretty good for measuring and automating the humidity control on our home. We have installed three of this devices plus some smart switches to activate the dehumidifier, solving all our issues with the condense water on the windows. I can definitely recommend this ZigBee device, it has good connection, was easily recognised by the Sonoff USB Dongle Plus, and it´s fully integrated into HomeAssistant

Satisfaction. Apply to Home Assistant. Everything works as it should. It just doesn't have a notification diode.

Practical, it start air exchanger with motion sensor in bathroom

I now have 3 of these one coordinator and 2 routers. They are working great and the response time on my Zigbee network has dramatically improved. It seems well made and updating firmware was extremely easy. Great quality at a great price. Highly recommend.

Very happy with this panel.

Suggestion of improvements :
Include missing devices (Dual R3, Sonoff bridge, ...)
Increase accuracy of the temperature (strep of 0.5°C instead of 1°C)

I have like 40+ zigbee devices in my home and it just work out of the box without updating.
I also bought 2 just to be sure if i update the firmware and something goes wrong i alway's have a backup.

Price / quality is great and a must for someone who wants to consolidate their zigbee gateway's.

Great work!

I was prepared for it, read a lot of documents. Updated as soon as it arrived recently. Got US in EU region because of bigger screen.
One major issue to me - is temperature readings: its higher that ambient temperature. May be because of temperature sensor location (almost inside screen body), or lack of calibrations capabilities - it show temperature higher about 1.5..2 degrees Celsius. That makes thermostat function to work incorrectly.
Just as an example at the photos - NSPanel vs MIJia vs Oregon Meteo vs Saswell (current thermostat).

Great device, but very long delivery time

: A Fantastic product and been lucky to receive it after a long wait. However, there seems to be an issue with the Time zone as its not showing the correct Time, though its logged on to the local Router with correct Time Zone. Any tips/fix from the Technical team at iTead/Sonoff is welcome.