The Dylos DC1100 Pro Air Quality Monitor is a sensor designed by the Dylos Corporation. The sensor is a Laser particle counter which differentiates between large and small particles. The detection levels for the DC1100 Pro is 0.5 to 2.5 ug/m^3 for small particles, and larger than 2.5 ug/m^3 for large particles. The DC1100 Pro is specialized as an indoor air quality sensor, providing data records on the built in LCD screen in multiple mode formats, including minute, hour, and day histories. The DC 1100 Pro can also be connected to a desktop computer to monitor data continuously through a data logger (additional program provided with the sensor).