WN1821_C Console with 4.9" LCD Display and Built-in CO₂ Detector

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

 

Additional or optional or extra or compatible with sensors (sold separately):

One WN1821 supports one WS90 sensor; 

One WN1821 supports one WS80 sensor;

One WN1821 supports one WS69 sensor;

One WN1821 supports one WS68 sensor;

One WN1821 supports one WH40 sensor;

One WN1821 supports one WN32 sensor;

One WN1821 supports one WH45 sensor or WH46 sensor;

One WN1821 supports one WH57 sensor;

One WN1821 supports up to four WH41 sensors or WH43 sensors;

One WN1821 supports up to four WH55 sensors;

One WN1821 supports up to eight WN30 sensors or WN31 sensors or WN36 sensors;

One WN1821 supports up to eight WN34 sensors or WN34S sensors or WN34L sensors or WN34D sensors;

One WN1821 supports up to eight WH51 sensors or WH51L sensors;

One WN1821 supports up to sixteen WFC01 sensors or AC1100 sensors;