Features Indoor weather monitoring including carbon dioxide detection 4.9" LCD display & built-in Wi-Fi gateway A dedicated display center for Ecowitt ecosystem sensors (more detail on compatibility table); Measurement: CO2; Temperature & Humidity; Barometric; Display content: Time&Week;
Features Indoor weather monitoring including carbon dioxide detection 4.9" LCD display & built-in Wi-Fi gateway A dedicated display center for Ecowitt ecosystem sensors (more detail on compatibility table); Measurement: CO2; Temperature & Humidity; Barometric; Display content: Time&Week;
in 3 offers
last seen 31 Oct 2026
The lowest price we last saw for WN1821 IoT Wi-Fi Weather Station, 4.9" LCD Display with Built-in CO2 Detector and WN31(WH31) Multi-Channel Temperature/Humidity Sensor North America was $127.19 at AliExpress.com - AliExpress-226247430, compared across 3 retailers (last seen 31 Oct 2026). Prices may have changed since.
The all-time low we recorded was $68.18 on 28 Aug 2026.
Prices last updated 31 Oct 2026.
WN1821 IoT Wi-Fi Weather Station, 4.9" LCD Display with Built-in CO2 Detector and WN31(WH31) Multi-Channel Temperature/Humidity Sensor North America
Features Indoor weather monitoring including carbon dioxide detection 4.9" LCD display & built-in Wi-Fi gateway A dedicated display center for Ecowitt ecosystem sensors (more detail on compatibility table); Measurement: CO2; Temperature & Humidity; Barometric; Display content: Time&Week;
Features Indoor weather monitoring including carbon dioxide detection 4.9" LCD display & built-in Wi-Fi gateway A dedicated display center for Ecowitt ecosystem sensors (more detail on compatibility table); Measurement: CO2; Temperature & Humidity; Barometric; Display content: Time&Week;
Last updated at 31/10/2026 16:01:59
ECOWITT WN1821 Wireless Weather Station, Colorful LCD Display with CO2 Detector, Multi-Channel Temp-Humidity Sensor, Pressure Sensor, Wi-Fi Gateway,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ecowitt WN1821_C Weather Station Display Console, 4.9 inch LCD Display with Built-in CO2 Detector,
Free delivery
WN1821 IOT Wi-Fi Weather Station, 4.9" LCD Display with Built-in CO2 Detector and WN31(WH31) Multi-Channel Temperature/Humidity Sensor North America
Delivery $12.34
| Type | Weather Station |
| Scale | inHg, hPa |
| Temperature | Yes |
| Temperature Scale | Fahrenheit, Celsius |
| Barometric Pressure | Yes |
ECOWITT WN1821 Wireless Weather Station, Colorful LCD Display with CO2 Detector, Multi-Channel Temp-Humidity Sensor, Pressure Sensor, Wi-Fi Gateway,
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ecowitt WN1821_C Weather Station Display Console, 4.9 inch LCD Display with Built-in CO2 Detector,
Free delivery
WN1821 IOT Wi-Fi Weather Station, 4.9" LCD Display with Built-in CO2 Detector and WN31(WH31) Multi-Channel Temperature/Humidity Sensor North America
Delivery $12.34
| Type | Weather Station |
| Scale | inHg, hPa |
| Temperature | Yes |
| Temperature Scale | Fahrenheit, Celsius |
| Barometric Pressure | Yes |
