• Second-hand smoke consists of particles and vapours that linger and remain in the air for up to 5 hours when a tobacco product is burned. There are 2 types of second-hand smoke; smoke exhaled by smoker (mainstream smoke) and the smoke that coming off the lit end of a cigarette (sidestream smoke).

• More than 85% of tobacco smoke is invisible.

Second-hand smoke exposure has been shown to have a number of harmful effects on children’s health:

• Children and infants are more vulnerable to tobacco smoke than adults. Children have smaller airways, breathe faster and their immune systems are still developing.

• Tobacco smoke can cause low birth weight in babies which has been associated with coronary heart disease, type 2 adult onset diabetes, and being overweight in adulthood.

• Middle ear infection in a child is 50% more likely to occur if one parent smokes.

• Children whose parents smoke at home are twice as likely to have asthma symptoms all year round.

• Exposure to second-hand smoke is associated with an increased risk of respiratory tract infections such as coughing, wheezing and croup.

• Children are three times more likely to smoke when they get older if they grow up around smokers.

The PA-II-SD device is an air quality sensor that measures real-time PM2.5 concentrations for residential, commercial, or industrial use. Built-in WiFi enables the air quality detector to transmit data to the PurpleAir map, where it is stored and made available to any smart device. For locations with limited or no WiFi access, the PA-II-SD PM2.5 measurement detector incorporates an SD card and real-time clock, allowing the sensor to record and store data locally. More specification details at PurpleAir.com.