What You'll Need

Ecowitt WH45 Air Quality Sensor
Smartphone with the Ecowitt app
Power outlet
Wi-Fi network

Step 1: Choose a Location

Place the Ecowitt WH45 Air Quality Sensor in a central location at breathing height (3-5 feet from the floor). Avoid placing near windows, vents, or in direct sunlight for accurate readings.

Step 2: Power On

Connect the power adapter and plug in the device. Allow it to warm up for the initial calibration period (usually 24-48 hours for most accurate readings).

Step 3: Download the App

Install the Ecowitt app and create an account or sign in.

Step 4: Add the Device

Open the app and add the Ecowitt WH45 Air Quality Sensor. Connect it to your Wi-Fi network following the in-app instructions.

Step 5: Initial Calibration

The device will calibrate over the first day or two. During this time, readings may fluctuate as it establishes a baseline.

Step 6: Configure Alerts

Set up notifications for when air quality drops below acceptable levels. You can usually customize thresholds for different pollutants.

Understanding Readings

Common measurements include:

PM2.5: Fine particulate matter (ideal: under 12 μg/m³)
VOCs: Volatile organic compounds from cleaning products, paint, etc.
CO2: Carbon dioxide levels (ideal: under 1000 ppm)
Temperature & Humidity: Comfort and mold prevention

Smart Home Integration

The Ecowitt WH45 Air Quality Sensor uses WiFi and works with various smart home platforms. Create automations to turn on air purifiers or ventilation when air quality drops.

Troubleshooting

Readings seem off: Check placement and allow full calibration time
High PM readings: May indicate cooking, candles, or outdoor pollution
Device offline: Check Wi-Fi connection and power supply