Overview: This document describes the specification of the PZEM-004T AC communication module, the module is mainly used for measuring AC voltage, current, active power, frequency, power factor and active energy, the module is without display function, the data is read through the TTL interface. PZEM-004T-10A: Measuring Range 10A (Built-in Shunt) Function description 1.1 Voltage 1.1.1 Measuring range: 80~260V 1.1.2 Resolution: 0.1V 1.1.3 Measurement accuracy: 0.5% 1.2 Current 1.2.1 Measuring range: 0~10A(PZEM-004T-10A) 1.2.2 Starting measure current: 0.01A(PZEM-004T-10A) 1.2.3 Resolution: 0.001A 1.2.4 Measurement accuracy: 0.5% 1.3 Active power 1.3.1 Measuring range: 0~2.3kW(PZEM-004T-10A) 1.3.2 Starting measure power: 0.4W 1.3.3 Resolution: 0.1W 1.3.4 Display format: Less than1000W, it display one decimal, such as: 999.9W 1000W, it display only integer, such as: 1000W 1.3.5 Measurement accuracy: 0.5% 1.4 Power factor 1.4.1 Measuring range: 0.00~1.00 1.4.2 Resolution: 0.01 1.4.3 Measurement accuracy: 1% 1.5 Frequency 1.5.1 Measuring range: 45Hz~65Hz 1.5.2 Resolution: 0.1Hz 1.5.3 Measurement accuracy: 0.5% Material: Plastic colour: Transparent blue Package Contents: 1 x Digital Multifunction Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.