- 2000 mAh rechargeable battery delivers long runtime with low power consumption, reducing the need for frequent replacements. - Large digital backlit display provides clear, easy-to-read readings and includes an alarm function for timely alerts. - Sensor stack includes Air Semiconductor Sensor, PM2.5 sensor, and electrochemical sensor, driven by a high-performance chip for accurate detection; accuracy up to 1 ppm. - No calibration required; automatic monitoring calibration at startup for reliable operation. - Suitable for office, school, warehouse, and agricultural plantings; ready to use without special setup. - Applications: - Office or classroom: real-time air quality monitoring with alerts to prompt ventilation. - Warehouse: monitor air conditions to protect workers and stored goods. - Greenhouse or agricultural growing areas: track PM2.5 and other readings to optimize ventilation and plant health.