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Building Management System BMS - building automation

Building Management System BMS – Comprehensive Solutions for Automation and Integration

A Building Management System (BMS) is a centralized platform that enables intelligent monitoring and control of building infrastructure, such as HVAC, lighting, access, and energy. To ensure smooth data exchange and automation across different technologies, a BMS requires specialized converters, communication modules, and industrial networking equipment. At CONSTEEL, we offer a full range of industrial-grade solutions to support efficient, reliable, and scalable BMS deployments.

M-Bus Converters – Integrating Energy and Water Meters

M-Bus to Modbus converters enable BMS platforms to retrieve real-time readings from thermal, electric, gas, and water meters. They are essential for accurate energy monitoring, cost allocation, and integration with building analytics systems.

DALI Converters – Smart Lighting Management

DALI converters support the integration of lighting systems into the BMS architecture. They offer advanced control over individual luminaires, groups, and scenes. These devices help reduce energy costs and enhance occupant comfort through automation.

BACnet, Modbus, KNX Converters – Multi-Protocol Communication

Our protocol converters bridge communication between BACnet IP, Modbus RTU/TCP, and KNX systems. They are key components for linking HVAC units, lighting controls, fire systems, and access control into a unified BMS dashboard.

AC Communication Modules – BMS Control for Air Conditioning

Specialized communication modules allow direct integration of split units and VRF/VRV air conditioners (Daikin, LG, Mitsubishi, etc.) into BMS networks. These devices enable centralized temperature, mode, and schedule control across all zones.

I/O Modules – Digital and Analog Signal Handling

Input/output modules expand the control capabilities of your BMS. They collect signals from sensors and switches, and control actuators, fans, relays, or dampers. Ideal for HVAC, alarm, shading, and access control systems.

Industrial Switches – Reliable Ethernet Networks

Our industrial-grade Ethernet switches are designed for high-performance BMS networks. They feature wide temperature ranges, redundant power supply, VLAN, QoS, and ring redundancy support – ensuring network stability in harsh environments.

Serial Device Servers – Integration of RS232/RS485 Devices

Serial servers allow legacy devices with RS232 or RS485 interfaces to communicate over IP-based BMS platforms. Perfect for extending the life and connectivity of meters, controllers, and older field devices.

Fiber Media Converters – Long-Distance Communication

Fiber media converters provide reliable data transmission over long distances and ensure electromagnetic interference resistance. Crucial in large buildings, campuses, and industrial areas where wired Ethernet cannot reach.

Frequently Asked Questions (FAQ)

What is a Building Management System?
A BMS is an integrated platform that enables the automated control and monitoring of building systems, such as HVAC, lighting, and power distribution, improving comfort, energy efficiency, and operational safety.

Why are protocol converters necessary in BMS?
They ensure compatibility between devices using different communication standards. This enables centralized control and expands integration across building technologies from various manufacturers.

Which devices can be integrated into a BMS?
HVAC units, lighting systems, power meters, access control, fire alarms, and other building subsystems – using converters, I/O modules, and network equipment.

Is BMS suitable for industrial environments?
Yes – with our robust industrial solutions such as Ethernet switches and serial servers, BMS platforms can operate reliably even in harsh industrial conditions.

Explore our full product offering to build a powerful and future-proof Building Management System. Our team is ready to assist you with technical support and custom-tailored solutions.


ET-7255 CR ET-7255 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: ET-7255 CR
Ethernet I/O industrial module with 1/2 Ethernet Ports, 8 Digital Input Channels and 8 Digital Output Channels. ET-7055/PET-7055/ET-7255/PET-7255 provides 8 Dry/wet contact digital input channels and 8 source-type digital output channels. It features optical isolation for 2500 VDC of transient overvoltage protection but doesn’t provide channel-to-channel isolation. Each input channel can be used as a 32-bit counter and each output channel can dri..
1 391,20 zł
HD67059-232-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67059-232-B2
MBus Slave to Modbus Master - Converter (Modbus Master Port: RS-232). HD67059M-232 allow to insert in a MBus network the measuring instruments that communicates with Modbus. An innovative characteristic is that, it is possible to concentrate in a single MBus slave device various Modbus devices, or create more than one.Specifications:Ports: 1x MBus; 1x RS-232Data Rates MBus: Up to 38400 bpsData Rates Modbus RTU: Up to 115200 bpsPower supply: 8...2..
1 391,20 zł
HD67059-485-B2 HD67059-485-B2
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67059-485-B2
MBus Slave to Modbus Master - Converter (Modbus Master Port: RS-485). HD67059M-485 allow to insert in a MBus network the measuring instruments that communicates with Modbus. An innovative characteristic is that, it is possible to concentrate in a single MBus slave device various Modbus devices, or create more than one.Specifications:Ports: 1x MBus; 1x RS-232; 1x RS-485Data Rates MBus: Up to 38400 bpsData Rates Modbus RTU: Up to 115200 bpsPower su..
1 391,20 zł
HD67164-232-422-A1 - Modbus RTU master to SNMP agent converter with housing type A, RS-232/RS-422, DIN assembly
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67164-232-422-A1
Industrial Modbus RTU master to SNMP agent converter, housing type A (slim), DIN rail mount. The HD67164-232-422-A1 converter allows you to connect Modbus RTU slave devices with a SNMP Manager network (such as a PC or supervision system) to exchange data between protocols. It operates as a Modbus Master and polls data from slave devices to make it available via SNMP. The unit supports both RS-232 and RS-422 interfaces, providing flexibility..
1 391,20 zł
HD67164-232-485-A1 - Modbus RTU master to SNMP converter, RS-232/485, housing type A, DIN rail mount.
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67164-232-485-A1
Industrial Modbus RTU master to SNMP agent converter, housing type A (slim), DIN rail mount.  The HD67164-232-485-A1 converter enables seamless integration of Modbus RTU slave devices with SNMP Manager networks such as SCADA or IT monitoring systems. Working as a Modbus Master, it retrieves or writes process values and exposes them via SNMP protocol to upper-layer supervisory systems. Its dual communication interface (RS-232 and RS-485)..
1 391,20 zł
HD67164-232-485-B2 - Modbus RTU master to SNMP converter with RS-485, housing B, DIN mount
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67164-232-485-B2
HD67164-232-485-B2 Industrial Modbus RTU Master to SNMP Agent Converter – DIN-Rail, Housing Type B.  The HD67164-232-485-B2 is a robust and efficient Modbus RTU Master to SNMP Agent converter designed for industrial applications requiring seamless protocol integration. It allows Modbus master devices such as PLCs or SCADA systems to communicate directly with SNMP-based management systems (e.g., supervisory platforms, network monitors, o..
1 391,20 zł
HD67165-232-422-A1 - Modbus RTU slave to SNMP agent converter, DIN rail mounting, housing type A , RS-232/RS-422/RJ45
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67165-232-422-A1
HD67165-232-422-A1 – Industrial Modbus RTU Slave to SNMP Agent Converter, Housing A, DIN Rail Mount The HD67165-232-422-A1 converter is a robust and compact industrial protocol translator that enables seamless integration between Modbus RTU slave devices and SNMP-based management systems. Designed in a slim housing type A for DIN rail mounting, it is perfectly suited for installations with limited space, such as electrical cabinets, automati..
1 391,20 zł
HD67165-232-485-A1
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67165-232-485-A1
HD67165-232-485-A1 – Industrial Modbus RTU Slave to SNMP Agent Converter, Housing A, DIN Rail Mount The HD67165-232-485-A1 is an industrial-grade protocol converter that enables seamless communication between Modbus RTU slave devices and SNMP Manager systems. With a slim housing design (Type A) and DIN rail mounting, this unit is ideal for compact automation cabinets and industrial installations where space and reliability are critical. ..
1 391,20 zł
HD67165-232-485-B2 - Modbus RTU slave to SNMP converter with screw terminals, housing B, DIN assembly, RS-232/RS-485/RJ45
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67165-232-485-B2
HD67165-232-485-B2 – Industrial Modbus RTU Slave to SNMP Agent Converter, Housing B, Terminal Blocks, DIN Rail Mount The HD67165-232-485-B2 is a high-performance industrial gateway designed to connect Modbus RTU slave devices with SNMP-based management networks. With a robust DIN rail-mountable housing type B and terminal block connectors for industrial-grade reliability, this converter ensures seamless interoperability between automation sy..
1 391,20 zł
HD67401-E7V
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67401-E7V
Industrial isolated CAN Repeater, line extender. Metal housing resistant to vibration and shock with triple 4kV isolation between CAN ports and CAN/power supply, Connectors SuperSeal 1.5, IP65Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments.Two versions, one with a coating of the PCB (suffix code V) that ensures total protection to the dust (IP65) and another encapsulation..
1 391,20 zł
HD67402-E7V
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67402-E7V
Industrial isolated CAN Repeater, line extender. Metal housing resistant to vibration and shock with triple 4kV isolation between CANopen ports and CANopen/power supply, Connectors SuperSeal 1.5, IP65Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments.Two versions, one with a coating of the PCB (suffix code V) that ensures total protection to the dust (IP65) and another encap..
1 391,20 zł
HD67403-E7V
2 year warranty Quantity discount 3-4 days
Brand: ADF Web Model: HD67403-E7V
Industrial isolated DeviceNet Repeater, line extender. Metal housing resistant to vibration and shock with triple 4kV isolation between DeviceNet ports and Devicenet/power supply, Connectors SuperSeal 1.5, IP65Particularly suitable for installation in cars, trucks, trains, boats, in the industrial sector and in fragile environments.Two versions, one with a coating of the PCB (suffix code V) that ensures total protection to the dust (IP65) and ano..
1 391,20 zł
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