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Relay Output 1W-UNI: Expander with 4x relay output

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English version

The Relay Output 1W-UNI expansion module allows to connect 4 relay outputs (NO/NC) rated up to 50V / 1A to the Ares 12 GSM remote monitoring unit.
Connect a horn, an alarm indicator or a relay to disconnect power over the 1-Wire UNI (RJ11) bus.

A 1-Wire UNI expansion module with relay outputs for Ares 12.
The relay outputs connected to the Ares 12 GSM remote monitoring unit can be controlled in three ways:

  • On/off switching using the SensDesk portal and its web interface
  • Sending text messages (SMS) directly to the Ares device
  • Local conditions (alarms) in the Ares unit (e.g. to switch a relay when a temperature is too high or too low)

A maximum of 2 Relay Output 1W-UNI modules can be connected to one active port (RJ11 connector of the Ares unit). To boost the power, an external 5V adapter or the “1-Wire hub Power” powered hub can be used.


Practical note:

One Relay Output 1W-UNI module always counts as 4 sensors towards the limit of the 1-Wire UNI bus. In case of Ares 12 (which supports 14 external sensors), 10 basic temperature sensors can be connected in addition to the “Relay Output 1W-UNI” module.




  • Interface: 1-Wire UNI (2x RJ11)
  • Compatible with: Ares 12
  • Output: 4x relay output – NO/NC (max. 50V / 1A)
  • Addresses: Each digital output uses one unique sensor ID
  • Limitation: The modul counts as 4 sensors on the 1-Wire UNI bus
  • Power: Bus-powered (1-Wire UNI) or external 5V adapter
  • Environment: Indoor use


Connecting relay outputs to the SensDesk portal

  • After the relay outputs are connected to the Ares GSM remote monitoring unit, the Ares unit can be connected to the portal and the outputs become accessible over the web.
  • Individual relay outputs can be controlled from the SensDesk website by simply clicking them.
  • Red means closed contacts, green means open contacts.
  • A text box warns that the output state change will take effect only after the next communication with the device (once per 15 minutes).
  • When the page is refreshed, the box disappears if the output states have been already updated.

>> More about the online portal

Powering several relay expanders

  • Power to the Relay Output 1W-UNI can be boosted with a 5V power adapter.
  • The bottom expander boosts the power for itself as well as for the other two relay expanders in the same 1-Wire UNI branch.
  • Caution: This configuration always counts as 12 sensors towards the limit, regardless of the number of relay outputs actually used.

  • Boosting the power with 1-Wire Hub Power

    • 1-Wire Hub Power is powered from a 12V adapter.
    • The power for each expander comes from an active 1-Wire / 1-Wire UNI port.
    • Caution: This configuration always counts as 12 sensors towards the limit, regardless of the number of relay outputs actually used.

    >> More about 1-Wire Hub Power

    Frequently Asked Questions

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      Spam protection. How many is SIX times six?

    • Can I connect Relay Output 1W-UNI to Ares 10?
      No. Ares 10 only supports 3 external sensors.
    • Is it possible to use Relay Output 1W-UNI with Ares 14?
      Yes. Ares 14 supports enough sensors.
      Note: The Ares 14 model has been replaced with the Ares 12 model.
    • Is it possible to connect the Relay Output 1W-UNI Expander to Poseidon2 or STE2?

    • Where can I find the prices of your devices?
      Ask our distributors, or request a quote directly from us using the form at this page.



    Relay Output 1W-UNI, Ares DO expansion, external DO ports, expansion module, controlling digital output, relay output, relay expander



    Name Description
    Relay Output 1W-UNI Expander for connecting 4 digital (relay) outputs to the 1-Wire UNI bus.


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