Model：U-228 Unicorder Desktop Recorder
RecordingMethod ：Automatic zero balancing type Number of Channels ： 1or2 Recording Width：250mm Measurement Range ： 1mV to 200V DC through17ranges, or other Chart Speed ： 10, 15, 20, 30, 40, and60mm/min,cm/min, mm/h, and cm/h, 23 rates through 24 steps Recording Paper ： Roll paper of 20m inlength,Right zero Recording Pen ： Cartridge type fiber-tip pen,redfor channel 1 and green for channel 2 Power Supply ： 100, 115, 200, 220, or240VAC±10% 50/60Hz Max．32VA(1ch) or 47VA(2ch) Dimensions and Mass ：W430×H123×D354mm,Approx．8kg