Product information: Color: black Function: HCHO, TVOC, PM1/2.5/10 HCHO test range: 0-1.999mg/m3 PM1/2.5/10 test range: 0~999g/ m3 TVOC test range: 0~9.999 mg/m3 Display mode: LED Power supply: Rechargeable lithium battery/ 1200mAh Input: 5.0V/300mA Weight: 185g Dimension: 150*70.8*43.6mm Features: New laser technology testing One key for calibration, one key for unit switch, one key for alarm and mute Mysterious style, sutiable for car, office and other environments Resolution: 0.001 High-Tech professional air detector for accurate aerial detection Strong R&D team already made this product perfect by continuously upgrading it with ISO 9001 certificated and potent certifications as well as China's government support, We have been a powerful & trustworthy enterprise with lovely team and warm service all the way. Agyris formaldehyde detector PM2.5 household indoor laser electrochemical air quality monitoring instrument.