When comparing Eyedro EHEM1 vs Brultech GreenEye Monitor (GEM), the Slant community recommends Brultech GreenEye Monitor (GEM) for most people. In the question“What is the best whole house electricity monitors?” Brultech GreenEye Monitor (GEM) is ranked 1st while Eyedro EHEM1 is ranked 3rd. The most important reason people chose Brultech GreenEye Monitor (GEM) is:
There are four pulse counter inputs which can be used to measure gas, water, possibly other things. 1 temperature bus/ 8 temperature inputs for tracking heating patterns. 32 current transformers Overall a comprehensive monitoring solution for utilities.
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Pro You can monitor your electricity costs directly
You can plug in your energy costs into the web app, and create precise reports to plan your budget.
Pro You get historical and real-time data
Eyedro tracks the power consumption in your home in real-time, and also collects historical data, like hourly averages. All data is collected in the dashboard of the free web-app.
Pro Monitors water, gas, temperature, and electricity usage simultaneously
There are four pulse counter inputs which can be used to measure gas, water, possibly other things.
1 temperature bus/ 8 temperature inputs for tracking heating patterns.
32 current transformers
Overall a comprehensive monitoring solution for utilities.
Pro Can work completely offline
If using the DashBox, internet outages or router downtime will not necessarily mean gaps/holes in data.
Pro Flexible and modular
It's nice that they let the user modify the package to suit their needs, particularly network method and whether to use a cloud service, keep it local, or a combination of both.
Even if no module is selected it still comes with a DB9 cable for RS232 access.
Pro Measures true power
Other options are inaccurate. This option is supposedly as dead on as the electric company metering is.
Con Must create & log in to the company's cloud service to access data
If the company ever goes under, this unit could potentially become useless.
Con Not really "smart"
GEM can only report whole house energy measurements and measurements per circuit. It can't tell you anything "smart" about your appliances. This means more investigative effort involved to understand how much your appliances use. Especially if something is faulty or working inefficiently.
Once you add optional modules such as Wifi, Ethernet, Zigbee connectivity options; DashBox (data storage /local webapp server for presenting the data), and Current Transformers the cost approaches $700.