Features:1. Made of high quality ABS housing material, durable in use.2. You can use this detector to detect indoor formaldehyde and TVOC.3. LED display screen, you can read the digits and data clearly.4. Lightweight and portable size, easy to carry and convenient to use.5. Suitable for using in office, living room, bedroom and cars.Specification:Condition: 100% Brand NewItem Type: Formaldehyde DetectorMaterial: ABS HousingModel: DM-101BTesting Item: HCHO TVOCScreen: LED DisplayPower Supply: 2 * AA Batteries (Not Included)Concentration Unit: 0.001Mg/MDetection Range:Formaldehyde: (0.001-1.999Mg/M)TVOC: (0.001-9.999Mg/M)Working Voltage: 2.4V-3.0VDetect Temperature: -10~50Storage Temperature: -10~45Size: Approx. 14.3*6.5*2 cm / 5.6*2.6*0.8 inchWeight: Approx. 130g / 4.6 ozPackage list:1 * Formaldehyde Detector (Battery Not Included)Note:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.