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Specification
Brand : Akozon
BulletPoint1 : 【Multifunction】This module is mainly used for measuring DC voltage, current, active power, frequency and energy consumption. The module is without display function, the data is read through the RS485 interface
BulletPoint2 : 【Input Power】Comes with built in shunt, the current measure range is 0.01-10A. RS485 interface is passive output, need external connect 5V power supply and the external power supply should ＞100mA
BulletPoint3 : 【UART to RS485 Interface】Physical layer use UART to RS485 communication interface, baud rate is 9600, 8 data bits, 2 stop bit, no parity. When the input test voltage is less than 7V, it must supply 5V independent work voltage through USB port. Do NOT use the USB port bring by your PC to be the independent power supply, otherwise it may damage your PC
BulletPoint4 : 【ModbusRTU Protocol】The application layer use the ModbusRTU protocol to communicate, it only supports function codes such as 0x03, 0x04,0x06, 0x41, 0x42, etc. It can display six measurement parameters on the computer when communicate through the software; it can also communicate with the buyer's own micro controller (the buyer should program by yourself)
BulletPoint5 : 【Widely Use】Voltage threshold can be set, divide into high voltage and low voltage threshold, when the measured voltage exceeds the threshold, it can alarm. The high accuracy, better compatibility will make it use widely
ExternallyAssignedProductIdentifier1 : 798382743843
ExternallyAssignedProductIdentifier2 : 0798382743843
ItemName : Akozon PEACEFAIR PZEM-003 DC Voltage Current Frequency Power Energy Consumption Meter Communication Module(#2)
ItemPackageDimensions_Height : 13.8938 centimeters
ItemPackageDimensions_Length : 3.4036 centimeters
ItemPackageDimensions_Width : 9.7028 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : industrial-power-meters
Manufacturer : Siemens Industry
Material : PC
MeasurementType : Ammeter or Voltmeter
ModelNumber : 7KM21120BA003AA0
NumberOfItems : 1
PartNumber : Akozonp1m6g9etkh-02
PowerSourceType : Corded Electric
ProductDescription : This module is mainly used for measuring DC voltage, current, active power, frequency and energy consumption, the module is without display function, the data is read through the RS485 interface.

Specification:
Brand: PEACEFAIR
Model: PZEM-003
Voltage:
Measuring Range: 0.05-300V (When the test voltage is ＜7V, please use the independent power supply mode) Resolution: 0.01V Measurement Accuracy: 1% Current:
Measuring Range: 0.01-10A Resolution: 0.01A Measurement Accuracy: 1% Power:
Measuring Range: 0.1-3kW Resolution: 0.1W Measurement Accuracy: 1% Energy Consumption:
Measuring Range: 0-9999kWh Resolution: 1Wh Measurement Accuracy: 1% Reset Energy: Use Software to Reset

Over Voltage Alarm:
Default High Voltage Threshold: 300V Default Low Voltage Threshold: 7V Communication Interface: RS485 Interface
Working Temperature: -20~60℃
Product Size: Approx. 9*6*2.3cm/3.5*2.4*0.9inch
Weight: Approx. 72g~92g / 2.5oz~3.2oz

Description 
Resolution Voltage value: 1LSB correspond to 0.01V 
Current value: 1LSB correspond to 0.01A 
Power value low: 16 bits 1LSB correspond to 0.1W 
Power value high: 16 bits 
Energy value low: 16 bits 1LSB correspond to 1Wh 
Energy value high: 16 bits High 

Register address Description Resolution 0x0000 High voltage alarm threshold(5~350V),
default is 300V 1LSB correspond to 0.01V 0x0001 Low voltage alarm threshold（1~350V）,
default is 7V 1LSB correspond to 0.01V 0x0002 ModbusRTU address The range is 0x0001~0x00F7

Optional Kit 
#1 1 x DC Consumption Meter 
#2 1 x DC Consumption Meter; 1 x RS485 to USB Cable
ProductSiteLaunchDate : 2018-09-10T21:27:54.117Z
StreetDate : 2017-06-23T00:00:01Z
Style : Industrial
SupplierDeclaredDgHzRegulation : not_applicable
UnitCount : 1
UnspscCode : 53120000