<p>Wireless signal transmission distance up to 100 meters without interference. Displays two different maximum and minimum temperature records simultaneously. </p> <p>Switchable between Celsius and Fahrenheit for daily convenience. Strong signal penetration. </p> <p>Alarm Settings: Audible and visual alerts when indoor or outdoor temperature exceeds preset minimum or maximum values. </p> <p>Easy to install and operate: Mount securely using the built-in magnet on refrigerators, freezers, or other metal surfaces, or place on a flat surface. </p> <p>Ideal for use in refrigerators, freezers, indoors, or outdoors to monitor temperature changes. </p> <p></p> <p>Specifications: </p> <p>Measuring Range (Transmitter): -40°C to 60°C (-40°F to 140°F) </p> <p>Accuracy: ±1°C (±2°F) </p> <p>Temperature Resolution: 0.1° </p> <p>Wireless Frequency: 433.92 MHz </p> <p>Wireless Range: Up to 100 meters (line of sight, no obstacles) </p> <p>Main Unit Dimensions: 95 x 62 x 20 mm </p> <p>Transmitter Dimensions: 95 x 36 x 20 mm </p> <p>Power Supply: </p> <p>- Main Unit: 2 x AAA batteries (batteries not included) </p> <p>- Transmitter: 2 x AA batteries (batteries not included) </p> <p>Color: White </p> <p>Material: Plastic </p> <p></p> <p>Package Includes: </p> <p>1 x Main Thermometer Unit </p> <p>2 x Temperature Transmitters </p> <p></p> <p>Note: Color appearance may vary slightly due to screen settings and lighting conditions. Measurement tolerance is ±1–3 cm.</p>