Features: 4 digits, 22000 counts. Dual parameter display: display two parameters of the same input signal. Measurement rate: FAST (7 times / sec), MID (5 times / sec), SLOW (2 times / sec). Trigger mode: automatic trigger, single trigger, external trigger(optional). Range switching mode: auto / manual. 12 basic measurement functions: AC and DC voltage, AC and DC current, two-wire / four-wire resistance, period / frequency, diode, on-off test, capacitance, duty cycle. DCV basic accuracy: 0.05%. Mathematical functions: MX+B/MAX/MIN/dB/dBm/Rel/Comp Hi/Comp Low/ Statistics. Additional functions: data hold, data record, data readback. Keys can be locked. Open calibration function. Square wave output. (optional) Provide system settings, can configure the language (Chinese / English), buzzer, screen brightness, interface display style. Temperature: thermocouple: K/N/R/S/T/B/E/J/WRe325/WRe526; RTD: PT100 / PT50 / Cu100 / Cu50. Communication interface: standard: USB device. Support SCPI protocol. A wider range of applications: can be used in fire protection, archeology, transportation, agriculture, geology, energy, smelting, electronics manufacturing and other fields.