WN1821_C Console with 4.9" LCD Display and Built-in CO₂ Detector
15% OFF Code: IWD2025 (Mar 5 ~ Mar 16 PST)
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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;
WN1821 has built-in Photoacoustic NDIR CO₂ Sensor for detecting CO₂ concentration, while WN1820 can work with WH45 Transmissive NDIR CO₂ detection, or WH46 Photoacoustic NDIR CO₂ to activate CO₂ function. Both of display has built-in temperature and humidity, and air pressure.
Display content:
Time&Week; Date or CO2 PPM Level, Backup Battery status ; Wi-Fi and RF signal status;
Indoor Temperature and Humidity, or WN34 or WN35 or WH51 ( up to 8 channels);
Multi channel Temperature/Humidity sensors with Min&Max record.
Soil moisture (WH51), leaf wetness (WN35), multi channels sensor (WN30/WH31/WN34S/WN34L/WN36) can be displayed on LCD seamlessly.
Cloud server content:
Data and graph record: Relative & Absolute Pressure; Indoor Temperature and Humidity; Temp & Humidity with Multi-channel;
Services
Website page: ecowitt.net; 192.168.4.1;
APP: Ecowitt;
Weather servers support: ecowitt official cloud server;
Wunderground; Weathercloud; WeatherObservationWebsite; Customized (Homeseer; Homeassistant;);
Specifications (Display)
| Measurement | Range | Accuracy | Resolution | Working condition |
| Barometric | 300 to 1100 hPa (8.85 to 32.5 inHg) |
Absolute pressure: ±1.5hpa; Relative pressure: ±2hpa |
0.1hPa (0.01 inHg) | Recommend |
| Temperature (Indoor) | 0°C to 50°C (32°F to 122°F) | ± 0.2°C (± 0.4°F) | 0.1°C (0.1°F) | Recommend |
| -40°C to 60°C (-40°F to 140°F) | ± 0.6°C (± 1.0°F) | 0.1°C (0.1°F) | LCD display or CO2 could fail | |
| Humidity (Indoor) | 30% to 70% | ± 1.8% | 1% |
Recommend |
| 1% to 99% | ± 3% | Normal | ||
| CO2 | 0 to 40000 ppm | ± (50 ppm + 5% of reading) | 1ppm | Recommend |
Power supply: 5V ⎓ 1.0A 5.0W
Backup power: 2 x AA batteries (Support Min. 24 hours working)
Wi-Fi Transmission
Transmission distance in open field: 50 m (165 ft.) depending on router and environment
RF Frequency: 2.4 GHz
WLAN and Ethernet: 802.11 b/g/n (802.11n, Max 150 Mbps)
Updates on the Internet: Customize 1-5 minutes (recommend 1 minute)
Parts List
1* WN1821 Display (Console)
1* USB to 2.5*0.7mm DC 5V power cord for display
Packaged information
Weight: 350g
Battery: N/A
NOTE: It is not a standalone product and needs to be used in conjunction with other sensors.
Compatibility Instructions
for all ecowitt network consoles
Please follow the table to make sure you choose the right sensors and concoles before check out.
Note: The "1/4/8/16" means 1 console supports 1/4/8/16 sensors
( excluding accessories )
