Real-Time Monitoring Instantly displays formaldehyde, TVOC, humidity, and time - know your air quality at a glance Air Quality Assessment Evaluates formaldehyde levels and alerts you to potential health risks Spatial Averaging Calculates average values of HCHO and TVOC across the space for more accurate assessment Smart Removal Calculator Estimates time, cost, and materials needed to remove formaldehyde based on your room size and method Customizable Alarms Set your own alert thresholds - the device warn you when levels are too high 1. Model Parameters Screen Material: 2.4-inch tempered glass touch HD color screen Backlight: Adjustable backlight brightness Power Supply: TYPE-C (5V/2A) Battery: 1000mAh 2. Technical Parameters (1) Formaldehyde Parameter Range: 0 - 2000 PPM Detection Hardware: Electrochemical sensor Preheat Time: 5 seconds (2) TVOC Parameter Range: 0 - 10 mg/m³ Detection Hardware: Semiconductor sensor Preheat Time: 120 seconds (3) Formaldehyde Level Classification Excellent: 0 mg/m³ - 0.08 mg/m³ Good: 0.08 mg/m³ - 0.1 mg/m³ Mild Pollution: 0.1 mg/m³ - 0.2 mg/m³ Moderate Pollution: 0.2 mg/m³ - 0.3 mg/m³ Severe Pollution: 0.3 mg/m³ and above (The product appearance and printed words depending on the batch, but this does not affect use) Color:As Shown Material:ABS Package Contents: 1 * HCHO Detector 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.