Extech 421509 7 Thermocouple Datalogger with Alarm features: Memory stores up to 16 data sets, 1024 maximum data capacity; Seven Thermocouple type selections: K, J, T, E, R, S, and N; Large backlit LCD with two secondary displays for simultaneous T1, T2, T1-T2, Time and advanced readouts; T/C offset adjustment; REC, MAX, MIN, MAX-MIN, Average and C/F switchable; Complete with two Type-K bead wire temperature probes (-4 to 482F/-20 to 250C), Windows 95/98/ME/NT/ 2000/XP compatible software, RS-232 cable, protective holster, and 9V battery.