The AcuRite Wireless Cooking & BBQ Thermometer with Pager is a portable and modern device that allows you to monitor the temperature of your food while cooking. It comes with an external sensor and a wireless pager that alerts you when your food is ready. The LCD screen displays the temperature in Celsius or Fahrenheit, as well as the battery strength indicator and clock. The thermometer is powered by two AA batteries (not included) and is made of plastic.