Feature: 1. Compact and convenient, intelligent detection, color screen interface, display formaldehyde index, formaldehyde hazard assessment, volatile organic compound index, air quality assessment, air quality detection 2. One machine can be used for multiple purposes. It can be tested immediately after startup, and the air change can be controlled at any time 3. Built in buzzer, formaldehyde exceeding the standard will be reported automatically 4. Direct charging of lithium battery saves worry and money. It can last for 5 hours when fully . Type-C interface provides convenient power supply 5. Formaldehyde detector. It is widely used in families, offices, enterprises, governments, schools and automobiles. Monitor air problems at all times to the health of family members or employees. Specifications: Product name: formaldehyde detector Material: ABS Color: black + yellow Model: SFD01 Display mode: LED screen display Detection gas: formaldehyde Formaldehyde detection range: 0.000-1.999mg/m Interference gas: alcohol, carbon monoxide and other gases Preheating time: 3 minutes Response time: 60 seconds Recovery time: 60 seconds Power supply mode: lithium battery USB interface: Type-C interface Input voltage: 5V/1A Operating temperature: 20 C-50 C Operating humidity: 15% RH-95% RH Storage temperature: 0-25 C Product size: 142 x 68 x 37mm Package Contents: 1 x Detector 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.