1A multi-functional digital clamp multimeter with stable performance and high reliability. 2Professional testing, complete function. Used for voltage, current, resistance, capacitance, frequency, temperature, duty cycle, diode and on-off test. 3Automatic range and manual range, full range overload protected function. 4For the measurement of sine wave signal, the error of the true RMS method is smaller than that of the traditional average response method. 5The true RMS meter can accurately measure the sine wave signal, but if on the AC function file, there is no input to the measured signal (in the AC voltage file, short circuit at the input end), the clamp table may display a reading between 1 and 50 wordFeatures: A multi-functional digital clamp multimeter with stable performance and high reliability. Professional testing, complete function. Used forvoltage, current, resistance, capacitance, frequency, temperature, duty cycle, diode and on-off test. Automatic range and manual range, full range overload protected function. For the measurement of sine wave signal, the error of the true RMS method is smaller than that of the traditional average response method. The true RMS meter can accurately measure the sine wave signal, but if on the AC function file, there is no input to the measured signal (in the AC voltage file, short circuit at the input end), the clamp table may display a reading between 1 and 50 words.These deviations are normal. Within the specified measurement range, they do not affect the accuracy of the multimeter measurement of alternating current. True RMS requires a certain level of input signal to be measured.Therefore, the range of AC voltage and current is specified between 2% and 100% of the full range. Specification: Brand: UYIGAO Model: UA9233E Color: Black Environmental temperature:23 5 Relative humidity: DC voltage: Measuring Range Resolution Accuracy 6V 0.001V 0.5% reading + 5 digit 60V 0.01V 600V 0.1V 0.8% reading + 5 digit Input impedance: 10M Maximum input voltage: 600V DC or 600V AC (effective value) Note: At a small voltage range, the pen is not connected to the circuit being tested, and the meter may have a pulsating reading.