Electronic systems for renewable energy sources, home automation



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Rationing system

Dear customers, due to the high demand, we are introducing a rationing system for our most ordered products from 9 January 2023. For more information about this method of purchase, see here. New registrations are temporarily suspended until January 16, 2023 to allow priority purchase for our long-term business partners.

Design change

Dear customers, due to better availability, from 22/08/2022 we deliver all our controllers in slightly different installation boxes, which are functionally completely identical to the original ones, only they are slightly different in design - they do not have the bottom sharp edge. The size of the controller, i.e. the number of modules and other parameters, does not change. The absence of the bottom sharp edge also objectively facilitates the installation of the controller in the switchboard.

End of cooperation with Russia

Today we ended our cooperation with Russia. No orders from this country are possible and no technical support will be provided. Also, Russian language will be removed from all our future software updates.

Price increase

Dear customers, business partners,
Due to the ever-increasing prices of all input components and energies, we are also forced to increase the prices of our products and accessories that we offer. Price increase 1.2.2022
As part of the adjustment of our price lists, on the other hand, there was a slight reduction in software extensions.
You can find the new prices in our e-shop.
Thank you for your understanding.

Global semiconductor shortages

Dear customers, due to these shortages we are not able to produce many of our products, especially wattrouters. The problem might affect even our other products, please refer here for further info and expected lead times.

Example of energy savings

In the charts below there is possible to see the amount of self-consumed energy before and after WATTrouter CWx has been installed (WATTrouter M series use the same control mechanisms thus the result would be the same).

The controller was installed on 24th July 2010 in a house with just 2,0 kWp photovoltaic plant. In this house there live 2 people. There was only hot water boiler connected to WATTrouter's built-in triac output in 1st priority. CombiWATT was activated for this boiler. Normally the boiler run at night in this house because the electricity was cheaper (low energy price tariff). Further there was connected a dryer for wet rooms in the house on relay 1, 2nd priority. The consumption from grid at night (low tariff) decreased immediately. There was still some surplus energy which could not be used and thus let flow to public grid. Important is that daily power consumption in normal tariff did not increase.

The energy flows through main electricity meter decreased substantially in both directions. Money savings per year were equal to 70 EUR. It is obvious that money savings increase proportional to the PV-plant peak power, as well as proportional to the ability to consume the surplus energy.

In both charts HT stands for regular (higher price) electricity tariff and LT for low (lower price) electricity tariff.

Notes to following chart: In november 2010 there was electric heating connected to WATTrouter and CombiWATT was activated for this heating. In April 2011 this heating has been disabled. This heating explains higher consumption from power grid in these months.