More from AliExpress – Zigbee Electronic Hygrometer

Tuya Hygrometer

Much as I hate to promote AliExpress, I took a chance and bought one of these devices and it was only €9.19 (Euros) delivered to me in Spain – ordered February 18, 2023, delivered March 2. The chance I took was that it might only work on the Smartlife APP -but no, I opened the box, pulled off the plastic tab protecting the supplied CR2032 battery – told my ZIGBEE2MQTT control panel to start looking for new devices and long-pressed the hygrometer on the button in the back (3 seconds plus).

Tuya Hygrometer ZG-227ZL

Sure enough the device appeared in Zigbee2MQTT. minutes later I used the rename command to take this Tuya ZG-227ZL deice from having a horribly long ID to being called ali-hygrometer-1 in my Node-Red setup. Short-pressing the button on the back not only gives an instant reading of temperature and humidity but also toggles the temperature between degrees F and C.

Not only that but you get the happy smiling face – not testesd to see when it goes on nd off yet – but this device has a NICE, high contrast display, way better than others Ihve had recently – it’ll be interesting to see how long the battery lasts. Temperature accuracy is claimed as +-0.3c. humidity +-6% and detection frequency 30 seconds.

Returned values include temperature, humidity, battery state and link quality. The smiley face shows happy between 40-70% humidity – sad the rest of the time.


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