- Advanced display: 2.8 inch color LCD with a 320 x 240 resolution provides clear, vivid readings for easy monitoring. - Customizable alarm threshold: Set the ozone (O3) warning level to your safety needs. When O3 exceeds the chosen threshold, a warning is triggered to prompt timely action. - Upgraded sensor technology: Uses advanced electrochemical sensors to measure O3 accurately. Includes temperature and humidity sensors to give context to air quality data. Self-calibration helps maintain precise and reliable readings. - Convenient power and alerts: Micro USB charging allows easy recharging with common USB power sources. A low battery warning keeps the device ready for use. - Practical and reliable performance: Compact form factor designed for desktop, countertop, or portable use, delivering consistent results in everyday environments. - Compatibility and usage: Recharge via standard micro USB; suitable for homes, offices, workshops, and outdoor settings where ozone monitoring is important. - 2-3 use scenarios: - Home or office: monitor ambient ozone levels and receive alerts to improve indoor air safety. - Outdoor activities or fieldwork: check air quality on-site during gardening, commuting, or safety-critical tasks. - Workshops or laboratories: maintain awareness of ozone exposure and respond promptly to rising levels. - Key specifications preserved: O3 concentration measurement with temperature and humidity sensing, self-calibration, 2.8" color display, 320 x 240 resolution, customizable alarm, micro USB charging, and low battery alert.