Description Wireless transmission thermometer with digital LCD alarm 1. The wireless signal transmission range is 100 meters without interference. Two different maximum and minimum temperatures can be displayed simultaneously. 2. °C/°F conversion: The display can be switched between Celsius and Fahrenheit as needed and offers strong signal penetration. 3. ALARM ADJUSTMENT: If the indoor or outdoor temperature exceeds the preset minimum and maximum values, an audible and visual alarm will sound. This allows you to see if adjustments are necessary. 4. EASY INSTALLATION AND OPERATION: Attach the thermometer directly to your refrigerator or freezer using the magnet on the back, or place it on a table. 5. APPLICATION: Can be used in refrigerators or freezers, as well as indoors and outdoors, to easily monitor temperature changes and provide double protection for your food. Parameters: Measuring range (transmitter): -40 °C to 60 °C (-40 °F to 140 °F) Tolerance: ±1 °C (±2 °F) Temperature resolution: 0.1 Radio frequency: 447.6 MHz Radio range: 100 meters without obstacles Main unit dimensions: 95 x 62 x 20 mm Transmitter dimensions: 95 x 36 x 20 mm Power consumption: (Standard delivery without batteries) Host: 2 x 7 AAA batteries Transmitter: 2 x 5 AA batteries Color: White Material: Plastic Scope of delivery: 1 x Thermometer 2 x Transmitters Only the above-mentioned items are included; other products are not included. Note: Light reflections and different display settings may cause the color of the item pictured to differ slightly from the actual product. The permissible measurement error is +/- 1–3 cm.