The Ecowitt WH45 is a 5-in-1 air quality sensor measuring PM2.5, PM10, CO2, temperature, and humidity. Updates every 60 seconds on USB power or every 10 minutes on battery for extended life.
Requires Ecowitt gateway or compatible console for data viewing. CO2 calibration supported with outdoor reference. View data via WS View app or ecowitt.net.
Specifications
Measurements
PM2.5, PM10, CO2, Temp, Humidity
Update Interval
60 sec (USB) / 10 min (battery)
Power
USB 5V 1A or 2x AA backup
Connectivity
Wireless to gateway
Compatible With
GW1000, HP2551, HP3500, HP3501
CO2 Calibration
Manual (outdoor reference)
PM Calibration
Via app offset
Display
None (view via app/web)
Weather Resistant
No (indoor only)
Data Upload
ecowitt.net (not Weather Underground)
App
WS View Plus, Ecowitt
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