Description Display method:LED Screen Atmospheric pressure: 86Kpa - 106Kpa Sampling time: 1.5 seconds Product Size:270*90*35mm Detection temperature: -10C to 50C; Relative humidity: 20% - 85% Storage temperature: -10C to 60C; Power source: Lithium battery with 2000 mAh capacity; 5V DC power charging Product weight: 350g -Measuring range:30~130dBA -Detection method for Noise : Electret Condenser microphone ProcessorARM ,High-speed complex calculations Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it