1. Introduction

Platform openHAB (https://www.openhab.org/) is an open source home automation system. Our Wi-Fi energy meter (WEM3080/WEM3080T) can be integrated with openHAB system.

2. Highlight

Our Wi-Fi energy meter has some highlight features comparing to other similar product,

https://www.iammeter.com/doc/iammeter/integrate-with-thirdparty-server.html

3. Integrate with openHAB

3.1 openHAB settings

Step 1, open PAPER UI(HABmin), then install "HTTP Binding" and "JsonPath Transformation".

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Step 2, open the file openhabconf/services/http.cfg (create file if not exists), and add the below text into the the file.

iammeter.url=http://192.168.12.33/monitorjson{Authorization=Basic YWRtaW46YWRtaW4=}
iammeter.updateInterval=4000

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Step 3, open the file openhab/conf/items/default.items (create file if not exists), and add the below text into the file,

Group     gIammeter				"Meters"				 <energy>        (Home)                    ["GroundFloor"]

Number  Iammeter_Voltage       "Voltage [%0f V]"    	<energy>     	 (gIammeter)				{ http="<[iammeter:4000:JSONPATH($.Data[0])]" }
Number  Iammeter_Current       "Current [%0f A]"   		<energy>    	 (gIammeter)        		{ http="<[iammeter:30000:JSONPATH($.Data[1])]" }
Number  Iammeter_Power         "Power [%0f W]"  		<energy>    	 (gIammeter)            	{ http="<[iammeter:4000:JSONPATH($.Data[2])]" }
Number  Iammeter_Importenergy  "Importenergy [%0f kWh]" <energy>    	 (gIammeter)           		{ http="<[iammeter:30000:JSONPATH($.Data[3])]" }
Number  Iammeter_Exportgrid    "Exportgrid [%0f kWh]"  	<energy>     	 (gIammeter)            	{ http="<[iammeter:30000:JSONPATH($.Data[4])]" }

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Step 4, open the file openhab/conf/sitemaps/default.sitemap (create file if not exists),and add the below text into the file

    Frame {
        Text item=Iammeter_Voltage label="Voltage [%.1f V]" icon="energy"
        Text item=Iammeter_Current label="Current [%.1f A]" icon="energy"
        Text item=Iammeter_Power label="Power [%.1f W]" icon="energy"
        Text item=Iammeter_Importenergy label="Importenergy [%.1f kWh]" icon="energy"
    }

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3.2 View the data on openHAB

Step 1, open the Basic UI and you will see the data of the meter.

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Step 2, you can also add the meter to habpanel.

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4. Purchase the meter

Model Description Purchase Link
WEM3080 Single phase Wi-Fi energy meter Aliexpress
WEM3080T Three phase Wi-Fi energy meter Aliexpress

5 Reference

  1. Product Catalog
  2. FAQ
  3. Integrated in Home Assistant

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