The HH800 and HH801 handheldsare easy to use Type K inputthermocouple thermometers.Both feature a large 31/2 digit LCDwith a maximum reading of 1999.The HH800 is a single-input modelwhile the HH801 has two inputs andallows for display of T1, T2 or .T(T1-T2). Both models feature T/Coffset adjustment and are °C/°Fswitchable. The HH800A andHH801A offer most of the featuresof the HH800 and HH801, butboth also have data storagecapability and accept J or K Typethermocouples. The HH801B andHH801C offer most of the featuresof the HH801, but they accept fourdifferent thermocouple types. Bothunits feature settable Hi/Lo limitsfor both inputs and have an integralalarm beeper. The HH801Balso features three displays forsimultaneous viewing of bothinputs and the differential.