LARGE INDICATOR: The refrigerator thermometer is large enough for providing a clear, easy and quick read, the dial displays proper temperature zones for refrigerator and freezer, ensuring a safe temperature zone for your foodWATERPROOF DESIGN: Probe Waterproof level IPX3 can resist the damp of the refrigerator or freezer room, make sure it is working in a safe and consistent waySIMPLICITY & EASY OPERATE: Digital thermometer hygrometer, simplicity is the key, NO need to operate any buttonsWIDELY TEMPERATURE MEAURING RANGE: The temperature can range from -50 degree to 110 degree and it is accurate. Allowing you to use this in the fridge, freezer. it can act the role of general thermometer for indoor or outdoorWIDELY APPLICATIONS: Perfect thermometer for fridge, freezer or as a general room thermometer. It is useful for different occasions such as home, restaurant, greenhouse, officeBattery installation: Flip the rear of the product; push the direction indicated by battery cover Pl; two button batteries to the battery compartmentTemperature optional sampling period of 2 seconds (default 2S)Operating voltage: 1.5V 2 button batteriesType: refrigerator thermometerOperating temperature: -5-50 Celsius (display)Humidity: 5% ~ 80%Colour:blackMaterial:plasticSize:Line length: 2mDimensions: 47.6 * 28.4 * 15.5 mmEmbedded hole size: 44.3 * 25.3 mmPackage Contents:6*refrigerator thermometerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.