Monitor air quality anywhere in your home with Ambient Weather's PM2.5 Indoor wireless particulate monitor. The high quality sensor uses laser scattering to radiate suspending particles in the air, then collects scattering light to obtain the curve of scattering light change with time. The microprocessor calculates equivalent particle diameter and the number of particles with different diameter per unit volume. PM2.5 refers to particles that are 2.5 microns or smaller in diameter. Includes AC power adapter. Notes & Limitations: Place the sensor in a well ventilated, non-moisture condensing area. With PM2.5 sensors, water droplets reflect the light, and can result in a higher reading. This is characteristic to the inherent sensor design. The condition occurs when: Temperature – Dew point Temperature ≤ 2ş C (3.6 şF). Thus, when the air is nearly saturated, the data is invalid. Compatibility List: ● WS-1550-IP, WS-1551-IP ● WS-1938 ● WS-1965 ● WS-2000 ● WS-2902 ● WS-5000, WS-5050, WS-5000-IP ● ObserverIP, ObserverIP2.0, WeatherHub *Make sure to upgrade your firmware first. The PM25IN and AQIN use the same channel. Each receiver will only support one PM25IN or one AQIN, not both. Features: 10 minute reporting interval 915 MHz frequency 300 ft line of sight (100 ft in most conditions) AQI Category: PM2.5 Breakpoints Good: 0.0 – 12.0 (µg/m3)Moderate: 12.1 – 35.4 (µg/m3)Unhealthy (Sensitive Groups): 35.5 – 55.4 (µg/m3)Unhealthy: 55.5 – 150.4 (µg/m3)Very Unhealthy: 150.5 – 250.4 (µg/m3)Hazardous: 250.5 – 350.4 (µg/m3)Extremely Hazardous: 350.5 – 500 (µg/m3) Range: 0-999ug/m3 Accuracy >100ug/m3, ±15%, <100ug/m3, ±15ug/m3 (at 25°C ±5°C) Resolution 1ug/m3 Sensor Dimensions 2.8 x 4.0 x 2.7 inches Sensor Power AC power adapter (included), 2 x AA alkaline battery backup (not included) Ambient Weather Network Forge connections within the weather enthusiast community by seamlessly linking your Ambient Weather station to the Ambient Weather Network (AWN). Immerse yourself in an interactive weather community where your personalized online dashboard becomes a focal point for sharing your real-time weather data. This interactive platform empowers you to customize your dashboard according to your preferences and freely share your weather insights in the AWN community without additional cost. The Ambient Weather Network brings together like-minded individuals passionate about weather observation and analysis. Join the conversation, exchange valuable insights, and be a part of a community that shares your enthusiasm for understanding and appreciating the ever-changing weather patterns. Responsive Design Add your personal weather station to the map and create your own hyperlocal forecast for the community. Customize your personal weather dashboard, organize your tiles with the measurements you prioritize, and label your sensors. You can select the radar, wind, or temperature layers or drill down to view your neighborhood’s weather stations. Watch time-lapse videos of weather conditions from local weather cameras or add your own. Weather on the Go When you open the app, you will encounter an interactive map of weather stations, weather cameras, and map layers that provide an incredibly detailed and hyper-local view of current conditions. With this data, you can easily find information about localized temperature, "feels like" temperature, humidity, pressure, windspeed, and precipitation levels from actual points like the start line of a marathon or the north end of a beach. Extensive Data & Alerts Set up email or text alerts for high and low conditions for every parameter; send multiple alerts for the same parameter, and view all past alerts in a handy timeline. You can also visualize your data with daily, monthly and yearly graphs, or customize your graphing interval. The expandable tiles and handy charts and graphs allow you to analyze your data, or you can download csv files for a deeper dive. Connect to AWN Responsive Design Weather on the Go Extensive Data & Alerts Which Air Quality Sensor is Right for You? Ambient Weather is the market leader in weather station and environmental monitoring instruments, serving customers since 1998. We provide solutions and software tools for the home and office, industry, schools, resorts, government and the media. Which Air Quality Sensor is Right for You? Ambient Weather is the market leader in weather station and environmental monitoring instruments, serving customers since 1998. We provide solutions and software tools for the home and office, industry, schools, resorts, government and the media. PM25 PM25IN AQIN Add to Cart Add to Cart Add to Cart Customer Reviews 4.0 out of 5 stars 188 4.0 out of 5 stars 188 4.4 out of 5 stars 20 Price $109.99$109.99 $109.99$109.99 $214.99$214.99 Sensor Type Sensirion Particle Sensor Sensirion Particle Sensor Swiss-made Sensirion Particle Sensor Measurements PM2.5 PM2.5 PM2.5, PM1.0, CO2, Temperature, Humidity Sensor Location Outdoor Indoor Indoor Sensor Notes & Features IPX3 water resistant, Solar powered Uses same channel as AQIN (each receiver will only support 1 PM25IN or AQIN, not both) Uses same channel as PM25IN (each receiver will only support 1 PM25IN or AQIN, not both); Only compatible with WS-2000, WS-5000 & WeatherHub Connectability WS-1550-IP, WS-1551-IP, WS-1938, WS-1965, WS-2000, WS-2902, WS-5000, WS-5050, WS-5000-IP, ObserverIP, ObserverIP2.0, WeatherHub WS-1550-IP, WS-1551-IP, WS-1938, WS-1965, WS-2000, WS-2902, WS-5000, WS-5050, WS-5000-IP, ObserverIP, ObserverIP2.0, WeatherHub WS-1551-IP, WS-1938, WS-1965, WS-2000, WS-5000, WS-5050, WS-5000-IP, ObserverIP2.0, WeatherHub