Check the listing for details. Gedaye Sound Level Meter Model MT-911A. Condition: New – Open box. Listed at 24.99 USD. This Gedaye Sound Level Meter Model MT-911A is the perfect tool for measuring sound levels in your workplace or environment. It is designed to provide accurate and reliable measurements to help you comply with safety regulations and industry standards. The meter is manufactured by Gedaye, a trusted brand in the industry, and is specifically designed for use in business and industrial settings. The meter is easy to use and provides clear and precise readings, making it an ideal tool for monitoring sound levels in real-time. It is also highly durable and built to last, ensuring that you can rely on it for years to come. Whether you're conducting research or simply looking to ensure that your environment remains safe and healthy, this Gedaye Sound Level Meter Model MT-911A is the perfect choice.