Compact meter for differential temperature measurements. The TM300 is a compact meter for differential temperature measurements. Large backlit LCD displays T1, T2, T1-T2 differential, plus Min, Max, and Avg. Wide temperature range with 0.1°/1° resolution. Readout in °F, °C, or K (Kelvin). Data Hold function freezes reading on display. Max/Min/Avg readings with relative time stamp. Offset key used for zero function to make relative measurements. Auto Power off with disable feature. Complete with two general purpose Type K bead wire temperature probes, three AAA batteries, and pouch case.