ITEM NAME:DS18B20 single-bus digital temperature sensor module Board for Arduino A5D2 DS18B20 single-bus digital temperature sensor module Board for Arduino A5D2 Operating voltage: 3V - 5.5V The signal output format: digital signal Temperature measurement range: -55 Celsius --125 Celsius Measuring accuracy: 0.5 Celsius Resolution: 9--12 bits With fixing screw holes for easy installation and fixation. Aperture 2.6mm The wiring instructions: "+": Positive power supply "-": Negative one "Out": connected microcontroller IO port Weight: 5g Color: picture color Material: PC + metal Size: 2.8*1.2*1cm Package Contents: 1 x DS18B20 digital temperature sensor module Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.