DS18B20 specs: unique 1-wire interface requires only one port pin for communication • multidrop capability simplifies distributed temperature sensing applications • requires no external components • can be powered from data line, power supply range is 3.0 V to 5.5 V • zero standby power required • measures temperatures from -55°C to +125°C (Fahrenheit equivalent -67°F to +257°F) • ± 0.5°C accuracy from -10°C to +85°C • thermometer resolution is programmable from 9 to 12 bits • converts 12-bit temperature to digital word in 750 ms (max.) • user-definable, non-volatile temperature alarm settings • alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) • 3-wire adaptor for Arduino included, dimensions stainless steel tube: •• diameter: 6 mm •• length: 30 mm • dimensions cable: •• diameter: 4 mm •• length: 36" (91 cm) • connections: •• red: 3-5 V •• black: ground •• yellow: data