REED Instruments SD-947 SD Series Thermocouple Thermometer, Data logger, 4 Channel, Type K, J, R, S, E, T and RTD Temperature Range: -148 to 2372F (-100 to 1300C), Basic Accuracy: +/-0.4% Displays up to 4 separate measurements simultaneously Accepts Type K, J , R, S, E, T thermocouple and RTD probes Real-time data logger with integral SD memory card Includes batteries