Air analysis apparatus; Air quality measurement apparatus, namely, particle counters; Alarms for the detection of inflammable gases; Carbon monoxide detectors; Combustible gas concentration detectors; Digital weather station instruments; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Gas alarms; Gas detectors for detecting the presence of gas; Gas testing instruments; Meteorological instruments; Portable dust measuring apparatus; Radiation detectors; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Smoke detectors; Surveying apparatus; Thermometers, not for medical purposes; Water testing instrumentation for monitoring and detecting contamination; Weather radios; Intelligent personal assistant devices comprised of voice-activated speakers, computer hardware, and recorded software for searching the internet for weather and traffic information