The Ecowitt WH0290 outdoor air quality sensor with display helps you monitor your local environment. Using the WH41 outdoor sensor the Ecowitt WH0290 monitor displays PM2.5 particle levels an Air Qualiy Index (AQI) along with indoor temperature and humidity.

Features

• Displays PM2.5 / AQI current and max value for 1h/24h/since last reset
• Displays the indoor temperature (°C/°F selectable) and relative humidity
  
• 6 Air Quality Grades: Good, Moderate, Poor, Unhealthy, Severe and Hazardous, showing you instantly what your air quality is like
• Indoor or Outdoor Air Quality Detector: Suitable to use at home, office, car and other environmental testing; monitor the air quality anytime anywhere to be away from harmful of PM2.5
• Rechargeable & Wireless: The PM2.5 sensor is powered by 2 rechargeable batteries and with built in solar panel as backup power(all included); also with battery power condition indicator. Note: Please full recharge the PM2.5 sensor before use

Includes

• WH0290A Digital Display
• PM2.5 Sensor WH41A
• USB charging cable for WH41 sensor
• 2x Ni-MH Rechargeable Batteries for sensor
• Instruction manual via electronic download

Technical & Manual

• Measuring range: 0~999ug/m3 
• Accuracy (at 25°C ±5°C):>100ug/m3, ±15%;<100ug/m3, ±15ug/m3;
• Resolution: 1ug/m3 
• Transmission distance in open field: 100m(300 feet)
• Frequency: 868MHz (UK/Europe)
• Sensor reporting interval: 10 minutes 
• Power consumption 2 x NiMH batteries (included) and solar
  

A copy of the WH0290 air quality sensor with display manual can be obtained by clicking here.