The digital multimeter 235 is a 3-3/4 digit, autoranging, AC-coupled, average measuring & RMS reading instrument that measures voltage, current, resistance, continuity, diode junctions, temperature, transistor HFE, capacitance and frequency. Menu selection allows Range Lock, Hold, Relative Measurement, Min Max Measurement, AC or DC selection, Centigrade or Fahrenheit selection, RS232 output and backlight on/off. The instrument is completely sealed.