Opentherm to Modbus gateway

€110.00 ex.VAT |€133.10 inc.Vat

Opentherm to Modbus gateway, module ideal for controlling your OpenTherm boiler via UniPi or Neuron.
Compatible with UniPi 1.1 and also with Neuron series!

In stock

SKU: 2015036. Categories: , .

Product Description

Opentherm to Modbus gateway

This module is ideal for controlling your OpenTherm boiler via UniPi. This new extension module brings new possibilities- controller and monitor in one piece of hardware.

We recommended to connect this module to UniPi via our USB-RS485 . It’s first module of our 2. generation of UniPi.

This module is a gateway for linking systems with Modbus RTU RS485 (EIA-485) communication and boilers with Opentherm+ (OT+) and thermostats.

It’s possible to use it in 2 different modes:

1. Monitor – module is only monitoring communication between boiler and thermostat
2. Controller – in this mode it is also possible to control the parameters of the boiler by writing to Modbus registers

Modbus485 parameters:

-Adjustable address
-Speed 9.6/19.2kbps
-Parity E/N
-Selectable terminating resistor

-Up to 7 gateways in one Modbus line

Opentherm protocol support


Opentherm gateway function – monitoring:

-OT boiler and thermostat connection
-Prolonging the OT communication line

Communication Module MM-OT101 is mostly used for controlling and monitoring of OpenTherm boilers, HVAC and energy management. It uses 5-24V DC power supply and it’s ready to be installed on DIN rail.



Additional Information

Weight 0.3 kg


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