WN1821 IOT Wi-Fi Weather Station, 4.9" LCD Display with Built-in CO₂ Detector and WN31(WH31) Multi-Channel Temperature/Humidity Sensor
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Features:
- Indoor weather monitoring including carbon dioxide detection
- 4.9" LCD display & Built-in Wi-Fi gateway
- Time, temperature & humidity, barometric, CO₂ PPM Level
- Wi-Fi connecting, and upload to weather station servers (wunderground, weathercloud, weatherObservationswebsite)
- DC power supply, supports backlight brightness adjustment
Overview of Display:
① Time
②Indoor Temp/Relative Humidity and Shared with Soil Moisture, Leaf Sensor
③ Signal Icon
④ WN31 Temperature
⑤ Channel Number
⑥ WN31 Humidity
⑦ WN31 MAX&MIN Humidity
⑧ WN31 MAX&MIN Temperature
⑨ Power Status
⑩ CO₂ PPM Level
⑪ Wi-Fi Icon
Compatible Add-On Sensors & IoT Devices(sold separately)
1(upload only) - WS90 Sensor Array
1(upload only) - WS85 Sensor Array
1(upload only) - WS80 Sensor Array
1(upload only) - WS69/WN67 Sensor Array
1(upload only) - WS68 Sensor Array
1(upload only) - WN20 Mini Rain Gauge
1(upload only) - WH40/WH40H Rain Gauge
1(upload only) - WH57 Lightning Detector
1(upload only) - WH45/WH46/WH46D Air Quality Sensor
1(upload only) - WN38 Black Globe Thermometer
1 - WN32/WN32EP Outdoor Temperature and Humidity Sensor
1 - WN32P Indoor Temperature, Humidity, and Pressure Sensor
4(upload only) - WH55 Leak Detector
4(upload only) - LDS01 Laser Distance Sensor
4(upload only) - Any combination of WH41 and WH43 Air Quality Sensor(PM2.5)
8 - WN35 Leaf Wetness Sensor
8 - Any combination of WN34L, WN34S, and WN34D Temperature Sensor
8 - Any combination of WN31/WN31EP Temperature & Humidity Sensors, WN30 Temperature Sensors, and WN36 Pool Thermometers.(1*WN31 included)
16(Supports moisture data display of up to 8 channels) - Any combination of WH51, WH51L, WH52 Soil Sensor
16(upload only) - Any combination of WFC01 Water Timer, AC1100 Smart Plug and WFC02 Ball Valve Timer
NOTE: Please note that when the gateway or console is connected to multiple sensors measuring the same parameter, the system will prioritize and display data from the sensor with the highest priority.
| Data Reception Priority | Model |
| Outdoor Temperature and Humidity | WN32/WN32EP > WS90 > WS80 > WS69/WN67 |
| Air pressure, Indoor Temperature and Humidity | WN32P > Gateway/Console built-in sensors |
| Wind | WS85 > WS90 > WS80 > WS68 > WS69/WN67 |
| Traditional Rainfall | WH40/WH40H > WN20 > WS69/WN67 |
| Piezoelectric Rainfall | WS85 > WS90 |
| Solar Light and UVI | WS90 > WS80 > WS68 > WS69/WN67 |
Specifications of 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)
Specifications of WN31 Sensor:
| Measurement | Range | Accuracy | Resolution | Working condition |
| Temperature | 0°C to 60°C (32°F to 140°F) | ± 0.3°C | 0.1°C | Recommend |
| -40°C to 0°C (-40°F to 32°F) | ± 1°C | Battery may not work | ||
| Humidity | 10% to 90% |
± 5% |
1% |
Recommend |
| 1% to 99% | ± 7% | Normal |
Sensor (backup): 2 x AA 1.5V battery (not included)
RF Transmission:
Transmission distance in open field: 150 m (500 ft.) depending on environment
RF frequency: 433/868/915 MHz depending on location
Sensor reporting interval: 61 seconds
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* WN31 Sensor
1* WN1821 Display (Console)
1* USB to 2.5*0.7mm DC 5V power cord for display
Packaged information:
Weight: 500g
Battery: N/A
 | |
|---|---|
| Built-in sensor measurement | |
Pressure |
|
Indoor Thermo-Hygrometer (Temp & Humidity) |
|
Thermo-Hygrometer (Temp & Humidity) |
|
CO₂ |
|
| Display Content | |
Relative Pressure |
|
Indoor Temperature |
|
Indoor Humidity |
|
Multi-Channel Thermo-Hygrometer (Temp & Humidity) |
|
| Console Features | |
Built-in a Wi-Fi Gateway |
|
Manage sensor on app |
|
| Connection & Data | |
Wi-Fi (2.4G only) |
|
RF Wireless protocol |
|
| Addable | |
Ecowitt IoT Device |
|
Ecowitt Sensor |
|
Compatibility Instructions
for all ecowitt network consoles
Please refer to the table to choose the correct sensors and consoles before checkout.
Note:
1) "1/4/8/16" = max number of sensors supported per console (excluding accessories).
2) Upload only = sensor readings shown only in the Ecowitt app and cloud (www.ecowitt.net).
3) Firmware (e.g. V1.9.6 / V2.0.2) = gateway/console must run this version or newer.
