The Perlick C31359 TruTemp Freezer/Refrigerator Thermometer provides precise temperature monitoring for your refrigeration needs. With a temperature range of -20°F to 60°F and -30°C to 20°C, it ensures optimal conditions for food storage. This thermometer is NSF listed, guaranteeing compliance with health and safety standards. Its factory-installed design allows for easy integration into your existing setup, making it a reliable choice for both commercial and residential use.