Scientific temperature measurement: no battery, energy saving, no harmful substances. Product features: oven temperature gauge helps protect your oven from overheating, clear burn temperature markings help ensure that the oven temperature allows you to get the most out of the fuel and that you burn it at operating temperature. Easy to place: the oven thermometer is easy to use and install. It allows the magnetic back to be placed on the tray or on the sides, and a practical hook can also attach the thermometer to the oven or single tube thermometer. Note that it is not attached to the grille directly. High-quality materials: high-quality aluminum alloy, safety and environmental protection. Able to read temperature degree quickly, high sensitivity, strong induction, fast response. Working temperature: flue gas temperature sensor measurement temperature range is 100 - 900F / 100 - 500C, the range is wide, the temperature measurement is accurate, the dial is large, easy to read.