Mitsubishi Electric’s range of adapters include high-level interfaces supporting standard commercial building automation protocols such as BACnet and Modbus, through to low-level interfaces providing flexible connectivity options.
For domestic products, there are solutions for Wi-Fi Control and interfaces allowing connection of smart thermostats.

MelcoBEMS Mini for commercial and domestic heating and cooling systems

A high-level, compact and cost-effective interface option
This adapter provides a high-level interface option for a wide range of Mitsubishi Electric products, ranging from heat pump split units right through to our e-Series Chillers and domestic or commercial hot water heat pumps.
These adapters offer a cost efficient, compact alternative which can easily be accommodated across all compatible products.
Integration of standalone units that do not have centralised connectivity to a Mitsubishi Electric Control System
Communication is over an RS-485 network using either BACnet MS/TP or Modbus RTU.
Products such as e-Series Chillers, QAHV and CAHV Commercial Hot Water Heat Pumps can be integrated with Mitsubishi Electric or third party building management systems via Modbus.
Ideal for monitoring and control of IT room cooling systems
The MelcoBEMS Mini is commonly used when P-Series Air Conditioning units are used for IT room cooling applications and no central M-Net controller is provided.
These units can be interfaced to the site BMS via either BACnet or Modbus to allow the BMS to monitor and control the operation of the cooling system.
Compatible with Air-to-Air and Air-to-Water products
- Air-to-Air products support Modbus and BACnet.
- Air-to-water products and Lossnay support Modbus only.
MAC-334IF-E Interface for M, S and P-Series Heat Pumps

A low-level interface with control and monitoring functionality
This adapter provides a low-level interface; allowing remote start and stop control, heating and cooling changeover and prohibits functionality depending on configuration settings.
Unit run status and fault status outputs are also provided and these require an external 12V DC power supply.
This adapter also provides an interface to connect M, S and P-Series units on to a Mitsubishi Electric M-Net System.
Provides an M-Net interface
The MAC-334IF-E adapter provides the flexibility to interface M, S and P-Series units to a site BMS via BACnet through either an AE-200 or BAC-HD150-E Central Controller.
A wired controller alternative to handheld infrared remote controller
This adapter can also provide a local wired controller connection for domestic M-Series units allowing an alternative to the standard handheld infrared remote controller.
Mitsubishi Electric MAC-568 Wi-Fi Control Interface for M, S and P-Series Heat Pumps

Convenient Wi-Fi remote control and monitoring via web interface or phone app
It allows remote control and monitoring of compatible units through either a web interface or app available for Android and Apple. Functions include time scheduling, group control, operation adjustment and monitoring.
Ideal for schools and residential homes
The MAC-568 Wi-Fi adapter is commonly used in residential and school applications.
Voice control capabilities
Support is provided for Amazon Alexa and Google Assistant providing voice control capabilities.
Built in Wi-Fi available
Built-in Wi-Fi is available with the Black Diamond LN Series, EcoCore AP Series and new EcoCore Designer Series Heat Pumps.
PAC-US444CN-1 Adapter for smart thermostat interfaces

Enables third party control for Mitsubishi Electric Indoor units via a number of terminal inputs
Functionality includes fan speed control, heating and cooling operation.
It is compatible with smart thermostats including Nest®, Ecobee® and Lyric®.
Ideal for smart home applications
The PAC-US444CN-1 thermostat adapter is commonly used in smart home applications.
Demand Response Enabling Device (DRED) Interface
Comes standard with various Mitsubishi Electric products
This interface allows connection of a Demand Response Enabling Device and is included as a standard item on a range of Mitsubishi Electric products.
Provides an interface to implement control in commercial and residential applications
DRED provides a method to implement load reduction during peak network demand or high pricing periods.
Often controlled by an external automation system to limit electricity consumption and avoid peak consumption charges.
DRED can also be enabled by electricity providers and network operators to limit electricity consumption during periods of network constraint.
Climaveneta Chillers and Heat Pumps
A range of adapters are available to interface products with building management systems
Climaveneta Chillers and Heat Pumps support a range of high-level interface adapters including Modbus RTU, BACnet MS/TP, BACnet IP and LonWorks.
These high-level interface adapters are commonly used for interfacing commercial chiller and hot water products with Mitsubishi Electric and third-party Building Management Systems.
Climaveneta Fan Coil Units
Support a range of wall controllers and interface adapters including Modbus RTU
The Modbus adapter is available as an optional extra for a range of units.
Modbus adapter interfaces with commercial and residential automation systems
The Modbus adapters are commonly used for interfacing Fan Coil units with commercial building management systems and residential home automation systems.
For all controls interfacing and connectivity enquiries, please contact us here.