Gikfun DS18B20 Temperature Sensor Waterproof Digital Thermal Probe Sensor For Arduino (Pack of 3pcs) EK1083x3 Power supply range: 3.0v to 5.5v Output lead: red (VCC), black (GND), yellow (DATA) Operating temperature range: -55C to +125C (-67F to +257F Accuracy over the range of -10C to +85C: 0.5C The probe adopts DS18B20 temperature sensor chip, water temperature prob. Its probe is made of high quality stainless steel Effectively waterproof, moisture-proof and anti-rust. Cable length; 1 meter. Pack of 3PCS