Product Type：AC Communication Module

Product Model：PZEM-004T(without outcase)

Product Function：

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)

PZEM-004T-100A: Measuring Range 100A (external transformer)

Measurement range：

1. Voltage
   1. Measuring range:80～260V
   2. Resolution: 0.1V
   3. Measurement accuracy: 0.5%
   4. Current
      1. Measuring range: 0～10A(PZEM-004T-10A); 0～100A(PZEM-004T-100A)
      2. Starting measure current: 0.01A(PZEM-004T-10A); 0.02A(PZEM-004T-100A)
      3. Resolution: 0.001A
      4. Measurement accuracy: 0.5%
   5. Active power
      1. Measuring range: 0～2.3kW(PZEM-004T-10A); 0～23kW(PZEM-004T-100A)
      2. Starting measure power: 0.4W 
      3. Resolution: 0.1W 
2. Measurement accuracy: 0.5%
   1. Power factor 
      1. Measuring range: 0.00～1.00
      2. Resolution: 0.01 
      3. Measurement accuracy: 1%
   2. Frequency
      1. Measuring range: 45Hz～65Hz 
      2. Resolution: 0.1Hz 
      3. Measurement accuracy: 0.5%
   3. Active energy
      1. Measuring range: 0～9999.99kWh 
      2. Resolution: 1Wh 
      3. Measurement accuracy: 0.5%
3. Reset energy: use software to reset.
4. Over power alarm

Active power threshold can be set, when the measured active power exceeds the threshold, it can alarm

1. Communication interface 

TTL  interface。

1. Physical layer protocol

Physical layer use UART to TTL communication interface

Baud rate is 9600, 8 data bits, 1 stop bit, no parity