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eFeeler optimizes electricity consumption for the cheapest moments.
Be smart and make your everyday life easier !

An easy and safe way to save electricity

The eFeeler controller has been developed for monitoring and optimizing electricity consumption. It is integrated into the property’s electrical system, and control is done through an easy-to-use mobile application.

The controller continuously monitors the real-time price of electricity on the market and provides users with an easy way to optimize the use of connected electrical devices during the most cost-effective times.

eFeeler is at its best, for example, in controlling electrical vehicle charging or use of hot water heaters.

How does eFeeler work?

eFeeler has been implemented with co-financing from the European Union. The goal was to develop a product for easy control of exhange electricity. With the support, we were able to commercialize the eFeeler controller for customers’ access.

  • eFeeler controller
  • 2 peaces 2.4 GHz antennas
  • USB-C cable 1m
  • DIN-rail adapter
  • 4 peaces of screws for wall mounting
  • User manual
  • Nominal voltage AC: 100 – 240 V
  • Maximum load 32 A (16A x 2)
  • Current consumption: < 1W
  • Number of channels: 2
  • Operating temperature: 0 – +85 °C
  • Enclosure: IP20
  • Bluetooth: 5.2 Yes
  • Wireless standard: Wi-Fi 802.11 b/g/n
  • Wi-Fi : 2.4 GHz
  • Wi-Fi radio signal strength: Yes
  • Material: Plastic
  • Dimensions without antennas (Height x Width x Depth): 15 x 7.7 x 3.5 cm
  • Dimension with antennas (Height x Width x Depth): 26 x 15 x 3.5 cm
  • The application requires an Android or iOS smartphone to function
  • The installation of the controller can only be carried out by an authorized electrician

Daily electricity market prices

The source of electricity market prices used is Nord Pool Spot prices. Prices vary significantly on a daily and hourly basis. The eFeeler smart relay helps optimize electricity consumption for the cheapest hours of the day.


The eFeeler controller is available for sale in well-equipped online stores and department stores.

The eFeeler application is available for free download on iOS and Android devices.

Xedi is a technology partner founded in 2019, offering its customers design services for electronics and embedded systems for industrial and consumer products. Their clients include international automation, medical, and technology companies. Xedi is based in Seinäjoki.

Technical support

Juha Mäki
p. 040 0358 634

Samuli Oja-kaukola
p. 050 548 5572

eFeeler setup

Efeeler:in käyttöönotto