This item is a digital thermometer. It can be attached to the refrigerator and any other steel surface because there is a magnet insde. You can also it on a hook with a hanging hole or just put it in a drawer. It has a wide measurement range and quick response. for daily use. Feature - Color: Blue - Material: ABS - Size: About 15.2 x 3.6 x 1.5cm / 6.0 x 1.4 x 0.6 inch ( W x H). - Temperature Measurement Range：-50 degree centigrade to 300 degree centigrade (-58°F to 572F) - Accurancy: +/-1 degree centigrade( -2°F ) at-20 degree centigrade to200 degree centigrade(-4F to 392F) - Waterproof and heat-resistant - Built-in 3V button cell - Auto off when it has not been used for 10 mins - Reponse time: 2 - Blacklight and Calibration - Instant read thermometer measures temperature in 2-3 seconds, and with an accuracy of +/-1 degrees with a wide range of -50 degree centigrade to 300 degree centigrade (-58°F to 572°F) -You can read the temperature at any time with the backlight button. - Foldable probe will help quickly and safely get the internal temperature of cooked food. - Made of strong ABS plastic, it will not deteriorate easily when it dropped to the groud at the height of 2M . - There is a hole at the end of it for easily hanging. Package list: 3 x Waterproof Digital Thermometer Instant Read Thermometer with Calibration and Backlight for Kitchen (Blue)