Features 1、This is an air quality tester that could detects the concentration of formaldehyde(HCHO) and total volatile organic compound(TVOC) in the air. 2、It can be widely used in household, office, car and many other environments. 3、With this instrument, you could measure indoor air quality after house decoration and keep you away from those harmful gas. 4、With clear LCD screen to read the testing results, more convenient to use for indoor air detection. 5、Built-in high-precision semiconductor sensor, double-thousand-bit detection display. 6、One-key operation, convenient and easy to use, small size, easy to carry. Specification Condition: 100% Brand New Item Type: Formaldehyde Detector Model: PC-S3 Material: Plastic Color: White Size: Approx.118x53x21mm / 4.6x2.1x0.8in Weight: Approx.81g/2.9oz Test Items: Concentration of formaldehyde and TVOC in the air Detection Range: 0.000-3.888 mg/m³ (Formaldehyde) 0.000-9.999 mg/m³ (TVOC) Battery: 2 x AA batteries (Not included) Working Voltage: 2.4-3.2V Working Temperature: 0°C-45°C Package List 1 x Formaldehyde Detector 1 x Instruction Manual