About This Product Name: Formaldehyde Detector Measurement Accuracy: 0.001 mg/m³ Measurement Range: Formaldehyde: 0.001-1.999 mg/m³ Rate Range: 0.001-1.999 mg/m³ (L/min) Power: 5 W Resolution: 480*480 This product primarily detects formaldehyde levels and benzene air quality in newly built residential homes. It features a built-in high-capacity rechargeable lithium battery, providing 16 hours of operation on a single charge. The premium housing material offers waterproof, dustproof, and explosion-proof functionality. The rear clip design facilitates easy portability. It incorporates three alarm types: audible, vibration, and indicator light alerts. The device can record detected data for convenient review and analysis. 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.