size:approx. 2.8*1.3cm
main chip:18B20 temperature sensor
working voltage:DC 5V

Package Includes:

1 x Digital DS18B20 Temperature Module Detection Sensor Module Board for Arduino DC 5V 18B20 Digital Signal Output 

100% brand new and high quality
Small size, high efficiency
Resolution adjusting range:
with installing hole,easy to install,hole diamere:2.5mm
Temperature Range:-55~+125Deg.C
Temperature measurement precision:0.5Deg.C
working voltage:DC 5V
digital signal output