The WW-30T display has a resistant input of Pt100 while the WW-30 has current inputs of 4-20 or 0-20mA and voltage inputs of 0.5, 1.5, 0.1 and 2.0V. Its power requirment is 10-30VDC or 230VAC +/-10%. Its LED characters are sized at 4 x 13mm.