This unique portable thermometer displays data from 4 thermocouple probes simultaneously on a large backlit LCD. Communicates with a computer via the bi-directional RS232 port and optional cable, and graphic software. Auto ranging with auto power off, minmax, hold and relative functions. High full scale accuracy of ±0.5% rdg. + 1ºC / 2ºF. Easily calibrates to ice point, or any other standard. 0.1º resolution <200º & 1º >200ºC. Wide measurement range of –328 ~ 2498ºF (-200 ~ 1370ºC). Comes ready to use with 2 beaded wire probes, instructions, and a 9V battery, in a protective, foam lined, case. Dim: 7¼" x 2½" x 1¼" (184 x 64 x 30 mm). Weight: 8.4 oz (238 g).