Safety Siren Pro4 Plug-in Radon Detector, Continuous Radon Gas Monitoring with Audible & Visual Alarms | Short & Long-Term Radon Detection for Home, Office, & Other Indoor Living Areas | Made in USA

MADE IN USA RADON DETECTOR – The Safety Siren Pro4 Series (4th Generation) radon gas detector is designed and manufactured in the USA and has been trusted since 1993 for accurate, reliable radon monitoring in homes, basements, offices, and other indoor living areas.
CONTINUOUS RADON MONITORING – Provides real-time digital radon readings along with short-term and long-term averages, helping you monitor changing radon levels and protect your household or property from prolonged exposure.
AUDIBLE & VISUAL ALARMS – Features three selectable audible alarm modes plus a visual alert for the hearing impaired, providing immediate in-room notification when radon levels are elevated.
EASY-TO-READ BACKLIT DISPLAY – The clear digital screen with back-light mode makes it easy to check radon levels day or night, even in basements and low-light areas.
AUTOMATIC DAILY SELF-TEST – Performs a fail-safe self-check every 24 hours to help maintain consistent operation and dependable long-term monitoring performance.