Temperature Sensor with Display

 is a compact electronic device designed to measure ambient or object temperature and display the measured value directly on a built-in LCD or LED screen, allowing real-time monitoring without the need for an external computer or controller. It uses common temperature sensing elements such as an LM35 sensor, DS18B20 digital sensor, or a thermistor, depending on the model, to provide reliable and accurate readings. The device typically supports a wide temperature measurement range, often from around –50°C to +125°C, with accuracy generally between ±0.5°C and ±1°C, and many models allow switching between Celsius and Fahrenheit units. It operates on low power and is available in different voltage options such as 3V–5V or 5V–12V, making it suitable for battery-powered and fixed installations. Some versions also support interfacing with Arduino or other microcontrollers for extended functionality. This type of sensor is widely used for room temperature monitoring, incubators, refrigerators, electronics and DIY projects, weather monitoring systems, as well as industrial and laboratory equipment where clear, instant temperature display is required.