Portable Ozone Analyzer O3 Meter Air Quality Monitor

Meet the Portable Ozone Analyzer O3 Meter Air Quality Monitor, a compact, battery-powered device designed to help you safeguard health and comfort by measuring ozone levels in real time. With a 2.8-inch color LCD, adjustable O3 alarm thresholds, and an electrochemical O3 sensor, you can easily track ozone concentration at home, in the office, or on the go. Use it to verify indoor safety after disinfection, monitor outdoor exposure, or check for ozone residues after cleaning. The built-in 2000 mAh battery, USB charging, and a sturdy storage box make it a reliable companion for everyday air quality checks. The device features temperature and humidity sensing, time/date, self-calibration, and a clear AQI-based ozone index for quick interpretation.

Benefits & Tips

• Set a user-adjustable O3 alarm to get immediate alerts if ozone rises above safe levels in any space.
• Use it after disinfection or cleaning to confirm ozone residues have fallen to safe concentrations before occupants return.
• Monitor indoor air quality in offices or homes and check ozone exposure outdoors to adjust environment and comfort.

Product specifications

• Model: DM509-O3
• Brand: meterk
• Sensor: Electrochemistry O3 sensor; Temperature & Humidity sensor
• Display: 2.8" color LCD (320×240)
• O3 AQI range: 0–0.100 Fine; 0.100–0.300 Slight; 0.300–1.000 Moderate; 1.000–4.999 Serious
• Battery: 1 × 2000 mAh lithium battery (included)
• Power: Micro USB charging; USB charge port
• Material/Color: ABS; Black + Orange
• Item size: 164 × 74 × 26 mm
• Package size: 280 × 225 × 70 mm
• Package weight: 501 g
• Features: Time/date display; Self-calibration function; LCD shows multiple parameters
• Origin: Mainland China
• Certification: CE

Package includes:

• 1 Air Quality Detector
• 1 USB Cable
• 1 User Manual
• 1 Box

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