The CRAFTSMAN Digital Refrigerator and Freezer Thermometer with Stainless Steel Temperature Gauge is the perfect thermometer to keep your food safe. With a mountable temperature sensor inside your fridge and freezer that relay temperature measurements to an external display, you’ll never have to worry about being surprised by spoiled food again. Not only does this tabletop or magnetic thermometer look great in any kitchen, but its battery-powered, wireless nature makes it the perfect camping thermometer for use with your cooler. Plus, you’ll be able to set alerts that will sound if temperatures rise or fall out of your custom, settable range. Each wireless temperature sensor requires two (2) AA alkaline or lithium batteries (not included), and the display requires three (3) AA alkaline batteries (not included). This temperature gauge with two temperature sensors comes with a one-year limited warranty.