Digital Data Logger Cable Kit with Tablet – Includes (1) Ruggedized Tablet, (1) Digital Data Logger Device, (1) Temperature Probe M5 x 5ft x 1/4 in NPT, (1) Cable M5 x 6ft w/2 Prongs, (1) Extension Cable w/ 2 Prongs x 50ft, (25) Disposable Temperature Probes w/2 Prongs x 5 ft You may use your phone for data logging, but a phone has to locate the sensor every time your phone goes into sleep mode.