Features: 100% brand new and high quality The DS18B20 temperature sensor provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor. The Pi DS18B20 module we add a 4.7k resistor and a 2x5 female header, so it is very easy to work with your pi. Compatible with Raspberry Pi 1/2/3/A+/B+ /Zero. Usable temperature range: -55 to 125C (-67F to +257F). Uses 1-Wire interface- requires only one digital pin for communication. 9 to 12 bit selectable resolution. Query time is less than 750ms. Package Includes: 1x Temperature Sensor Module Specifications: Material:ABS Size:Approx.2x2cm/0.79x0.79in Working Voltage:3.3V 0.5C Accuracy from -10C to +85C Net Weight:23g note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.