Air Quality Test Formaldehyde Detector. Features Air Quality Test Formaldehyde Detector -Color: Orange. -Material: ABS. -Size: 1.7x2.7x5.9inch. Detection Error: <15% Formaldehyde Detection Range: 0.000-1.999mg/m³ TVOC Detection Range: 0.000-1.999mg/m³ PM1.0/PM2.5/PM10 Detection Range: 0-999ug/m³ Temperature Measurement Range: 0-50 Humidity Measurement Range: 20~90%RH Battery: 1200mAh Lithium Battery Standby Time: About 240-360 Minutes Charging Time: About 4 Hours Life Time: About 2 Hours USB Interface: Type-C Interface Input Voltage: 5V/1A Working Environment: 5-40, <90%RH Specifications DIY Supplies: ELECTRICAL Certification: CE Model Number: Air Quality Tester Gas Type: Oxygen With LCD Screen Or Not: Yes Is Smart Device: NO Measurement Range: 0.000-1.999mg /m³ . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.