ITEM NAME:DS18B20 3 pins wire digital thermometer temperature IC sensor modul rsJ Gw.Sensor Model: DS18B20. The signal output format: digital signal. Size: 28.2mm (length) 13.1mm (width) 5.5mm (height). Weight: 5g. "-": Negative one. Second, the wiring instructions with fixing screw holes for easy installation and fixation.