The Ecowitt WN1821 comprises two components the WH31 temperature/humidity sensor and also the new design LCD display with CO2 monitor and indoor temperature and humidity sensor.
The compact LCD colour display includes inbuilt temperature, humidity, atmospheric pressure sensors and a CO2 level sensor. The console also includes built in WiFi to allow for data to be uploaded to online services.
This comes paired with the WH31 temperature and humidity sensor which can be located up to 150m from the receiving console either inside or outside.
This indoor data, along with the additional sensor data can be uploaded to the FREE Ecowitt service via WiFi along with many optional sensors that can be added. All of this can be viewed on an iOS or Android device or in a traditional browser via the Ecowitt weather website.
Unlike some other stations, the Ecowitt WN1821 can be used with a variety of sensors, click here to view the latest Ecowitt sensor matrix.
Many can be viewed directly on the console, the remaining in the App, or online via Ecowitt.net and in selected 3rd party services that support this sensor type.