The DS18B20+ Board Mount Temperature Sensors Programmable Resolution 1-Wire Digital Thermometer manufactured by Analog Devices is a highly accurate digital thermometer that uses a 1-Wire interface to communicate with external devices. It uses a Dallas 1-Wire protocol which is a low-cost, hardware-based, serial bus communication protocol that enables low-voltage and short-distance communications between devices and electronic controllers. The thermometer is capable of a wide range of temperatures and can measure temperatures between -55°C and +125°C (-67°F to +257°F) with a 0.5°C resolution and accuracy of ±0.5°C. It also features an alarm pin that is programmable to send an alarm signal when a temperature is outside of a predefined range. The device also offers a wide range of features, including hot-plugging and tear-resistant connection, a predictive active state for low power consumption, and system-specific calibration feature for accurate temperature measurements.