2 Wireless Sensors for Different Locations- With integrated console and 2 remote sensors, you can place sensor in refrigerator or outside. Wireless refrigerator thermometer can simultaneously display indoor temperature and 2 groups of fridge/freezer or outdoor temperature, that means the screen will display 3 temperatures at the same time.Audible Alarm Function- Equipped with 3. An audible alarm, when the temperature exceeds the preset minimum and maximum alarm value, thermometer will emit an audible alarm to remind you and your family to know about temperature variations and make certain changes over time.3.6Inch HD Large Screen &amp; Record Min and Max- Outdoor Indoor Thermometer with HD LCD Display. Large data size for comfortable viewing day and night. Record and display max/min temperature. Indoor: -10-60C; Outdoor: -40-60C; Transmission Range: 30M / 98.4ft (open area). Press / key to switch to Fahrenheit or CelsiusBattery Powered &amp; Intimate Service- Main unit requires 2*AAA (not included), 9.5*8*2cm; Each sensor 2*AAA (not included), 10.5*3.5*1.5cm. We offer one year warranty. If you have any questions, please do not hesitate to contact us. Easy Installation &amp; Widely Used - You can place the sensor in refrigerator or outdoor. On the main unit, there is a hole for hanging and a stand on the back, you can hang it on the wall or stand on the table. < p>Thermometer: - Power supply: 2 AAA batteries (not included) - Dimension: 9.5 * 8 * 2 cm (3.7 * 3.1 * 0.8in) < p>- Weight: 100g Sensor: - Power supply: 4 AA batteries (not included) - Dimension: 10.5 * 3.5 * 1.5cm (4.1 * 1.4 * 0.6in)< /p> - Weight: 38g (each) Attention: 1. While the indication is blurry, please change the battery. 2. Do not place this product in a hot, humid, dusty place or full of corrosive gas, in case its electronic components are damaged. 3. It will not alarm at the same time when the temperature exceeds the preset value. It will compare the temperature after 10 minutes. And when the temperature reaches the alarm value, the thermometer will immediately alarm. Package Contents: - 1 x Base Station - 2 x Sensor - 1 x User Manual Measuring Range Indoor Temperature Range-10 ~ 60 (14 ~ 140 )Outdoor Temperature Range-40 ~ 60 (-40 ~ 140 )Transmission RangeUp to 30 m (98.4 ft)Temperature Test Period10sSENSOR1 Update Rate57s< /tr>SENSOR2 Update Rate67s < /p>