Description An multi-function testing tool to monitor the air quality, a safeguard for family health If you worried about the air quality around you or your children. Easy to operate. Large LCD screen intelligently display the testing results, easy and clear to read! Feature - Color: Yellow and black - Material: plastic - Size: 11.8 x 5.5 x 2.2cm - Test range: 0.000--1.999 mg/m3(HCHO) - Detection time: 5-10 minutes - Input: 3v - Measuring TVOC Range: 0.000 ~ 9.999 mg/m3 - Measuring HCHO Range: 0.000 ~ 1.999 mg/m3 - High-precision detection - Constant temperature detection - Anti-interference - Air convection detection - Intelligent memory calibration - Dry battery protection - High-definition LED displayPacking list: 1 x detector