Welcome to our store! 1. Sound Level Meter, adopts a 4-bit LCD color screen, visual display of measurement results. 2. With a wide measurement range from 35dB to 135dB, easy to operate and use. 3. Designed to monitor sound quality in various environments, reliable measurement. 4. Suitable for noise control engineering, quality control, home environment monitoring, etc. 5. Small and compact, lightweight, easy to carry, with high accuracy, durable, and long-lasting. Item Type: Noise Tester Material: PVC Product Model: TDC801 Measurement Range: 35dB-135dB Display: 4-digit color LCD screen Battery Type: 3 x 1.5V AAA (battery not included) 1 x Noise Tester (battery not included) 1 x Manual 1 x Fabric Bag Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.