<b>Thank you for purchasing in our store! 12 months warranty service, if you have any problems with the product, please contact us whenever. We will find a best solution for you!</b><br><br> <b>The LCD screen with large digit. Record minimum and maximum temperatures and provide historical temperature readings. </b><br> <b>Upgraded version for more accurate monitoring and more accurate data. </b><br> <b>This feature allows you to easily monitor temperature changes in your refrigerator and provide double protection for your food safety.</b><br> <b>Suitable for home, restaurant, cafes, etc.</b><br><br> <b>Power Requirements:</b><br> 1 Main Unit - 2 x AAA(not included)<br> 2 Transmitters - 4 x AA (not included)<br><br> <b>Note:</b><br> 1. Don't put the transmitter directly in the rain.<br> 2.While the indication is blurring, please change the battery.<br> 3. Don't install the reverse battery,don't put the receiver near metal.<br> 4. Pls kindly use high-quality batteries for main unit and transmitters,it's more better.<br> 5. About the alarm function, the alarm will ring only 10minutes later not immediately when the temperature reach the max/min set temperature.<br><br> <b>Packing list:</b><br> 1 x Main Unit<br> 2 x Transmitter <br> 1 x User Manual<br><br> <b>Tips:</b><br><br> 1. Signal connections for wireless products can be affected by a variety of environmental factors. 1, signal interference, wifi, cell phone signals, etc. 2, obstacle interference, walls, metal products, etc. 3, signal connection distance, product interference is 100 meters without interference, the distance will be shortened after receiving interference.<br> 2. If you have any questions about the product connection, please feel free to contact us and our technical staff will provide you with professional technical guidance and advice.