Key benefits Know your indoor air: Built-in electrochemical sensors accurately detect formaldehyde (HCHO) and total volatile organic compounds (TVOC), so you can identify harmful chemical pollutants quickly. Clear, actionable display: 2021 new design with an LCD colour digital screen shows readings and averaged values to make it easier to interpret short-term fluctuations. Practical, portable use: Small and easy to carry or wear; designed for everyday indoor monitoring in homes, offices, schools, vehicles and other enclosed spaces. What it does Measures HCHO (formaldehyde) and TVOC (total volatile organic compounds) using electrochemical sensors for reliable detection of chemical pollutants in the air. Displays real-time readings plus mean values to reduce confusion from short-term instability in instantaneous measurements. Helps you decide when to ventilate or investigate sources of contamination. Key features Sensors: Electrochemical sensing elements for HCHO and TVOC detection. Display: 2021 upgraded LCD colour digital screen that shows numeric readings and averaged data. Portability: Designed to be easy to carry and suitable for use across multiple indoor environments. Recommended use: Optimized for indoor monitoring and for use as a stationary unit when relying on averaged results. Performance and usage guidance Readings: Provides real-time and averaged (recommended 30- and 60-minute) values. Averaged values give a more stable representation of indoor air quality than instantaneous values alone. Recommended mode: Use as a stationary monitor for general environment assessment and focus on 30- and 60-minute averages for actionable information. Real-time values can fluctuate and are best used for short-term checks. Indoor use only: This product is intended for indoor monitoring (homes, offices, businesses, schools, government spaces, automobiles). Practical applications Home: Place near new furniture, renovation areas, or in living spaces to detect formaldehyde and VOCs from paints, adhesives and new furnishings. Office/school: Use in workspaces or classrooms to monitor air quality trends and determine when to ventilate or investigate indoor pollution sources. Vehicle: Keep in a car to check for VOCs after transporting new materials or to confirm ventilation effectiveness. Notes and limitations Intended for indoor environments only. For stable, actionable results, use the device as a stationary monitor and interpret the 30- and 60-minute averaged values. Instantaneous readings may vary and are less reliable for long-term trends. What makes it stand out Focused chemical detection (HCHO and TVOC) with electrochemical sensors for improved specificity. 2021 LCD colour digital display that presents mean values to help you make clearer decisions about ventilation and indoor air management. Portable and easy to position where you need to monitor air quality most.