Handheld Ozone Detector 0‑5 PPM with Adjustable Alarm, Real‑Time Air Sampling and 2.8‑Inch LCD Display

2.8inch color LCD display with 320*240 pixels for clear, easytoread realtime information Useradjustable O3 alarm threshold to notify users when ozone concentrations rise above a chosen level Onboard fan draws in ambient air for more accurate, continuous measurements 2000mAh capacity lithium battery with USB charging and low battery warning for reliable portable use Key benefits Rapid awareness of elevated ozone: Adjustable alarm threshold lets you set the alert level that matches your environment or task, so you are informed when ozone concentrations exceed your preferred limit. More accurate realtime readings: The builtin fan actively samples ambient air, improving response and helping the device reflect current conditions rather than relying on passive diffusion. Portable and dependable power: A 2000mAh battery supports extended use between charges, USB charging enables convenient recharging from standard power sources, and a low battery warning reduces the risk of unexpected shutdown. Clear, intuitive display: The 2.8inch color LCD at 320*240 pixels presents readings and alerts in a readable format for quick checks on location. Function and performance Measures ozone residuals and displays results in real time using an active air intake system. Alarm threshold for O3 is adjustable by the user to suit different sensitivity needs. Battery powered with USB charging and low battery indicator to maintain continuous operation during inspections or monitoring rounds. Compatibility and practical details USB charging compatible with common USB power adapters, power banks, and computer USB ports. Display size and resolution: 2.8inch color LCD, 320*240 pixels. Power: 2000mAh lithium battery with low battery warning. Typical use scenarios Office air monitoring: Place the device in shared offices or meeting rooms to check for residual ozone after routine cleaning or equipment use and receive alerts if levels exceed your set threshold. Postdisinfection checks: Use the instrument after mechanical or chemical disinfection procedures to confirm residual ozone concentrations and ensure conditions meet your operational needs. Indoor and outdoor spot checks: Carry the unit for portable sampling in indoor spaces, building entrances, or outdoor transition zones where ozone residuals need verification. Why customers choose this device Adjustable alarms and active air sampling provide practical, actionable readings that fit different environments. Portable power and clear display make it suitable for routine checks, mobile inspections, and posttreatment verification. Designed to deliver straightforward operation and timely alerts without unnecessary complexity. What is included or required Device with 2.8inch color LCD display and onboard fan Builtin 2000mAh lithium battery, USB charging capability User controls to set O3 alarm threshold and view realtime readings This product is intended for detection of ozone residuals in offices, indoors and outdoors, and after disinfection. It provides adjustable alarms, active air sampling, and portable power to support practical monitoring and verification tasks.