PZ90A/1 AC digital voltmeterDetailed product description：

The PZ90A/1 AC digital voltmeter is a small and popular instrument with a 4 1/2 CMOS large-scale integrated circuit, and its measurement results are displayed using a five digit LED. This meter has the characteristics of small size, low power consumption, good reliability, excellent performance, strong adaptability, and easy use. When combined with various sensors or converters, it can easily achieve digital measurement of various electrical and non electrical quantities. It is a set of instruments for various measuring instruments and consoles. The communication measurement adopts the true effective value method.  

Technical data of PZ90A/1 AC digital voltmeter

Range, measurement range, resolution, and basic error: Under reference conditions, the basic error of the product meets the requirements in Table 1 within 24 hours.
Table 1

range	Measurement range*	resolution	Basic error
			50Hz—1kHz	1kHz—20kHz
200mV	0—199.99mV	10μV	± (0.2% reading+20 words)	± (0.6% reading+20 words)
2V	0—1.9999V	100μV
20V	0—19.999V	1mV
200V	0—199.99V	10mV		——
750V	0—750.0V	100mV