Check the listing for details. Control Company/Market Lab ML4011 Traceable Refrigerator/ Freezer Thermometer. Condition: New – Open box. Listed at 50.99 USD. This Market Lab ML4011 Traceable Refrigerator/Freezer Thermometer is a reliable tool for measuring the temperature of your refrigerator and freezer. The thermometer is designed specifically for use in the medical and lab equipment industry, ensuring accurate readings for optimal performance. The Control Company/Market Lab ML4011 model is easy to install and use, with a clear and easy-to-read display. Ideal for use in business and industrial settings, this refrigerator and freezer thermometer is a must-have for anyone looking to ensure the safety and efficacy of their equipment. With its durable construction and reliable performance, the Market Lab ML4011 Traceable Refrigerator/Freezer Thermometer is the perfect choice for those who demand the best.