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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.


CAN485 CAN485
Shipping 24h Test for Free! 6 year warranty
Brand: 3onedata Model: CAN485
CAN485 is used for data exchange between CAN-bus field bus and RS-485 bus interface converter, and supports Modbus RTU protocol. CAN485 interface converter integrated a RS-485 channel and a CAN bus channel can be easily embedded using RS-485 interface for communication ..
404,20 zł
MOD-1AI MOD-1AI
2-3 days
Brand: Aspar Model: MOD-1AI
Industrial expansion module with 1 input for current measurement and 1 input for voltage measurement on Modbus RTU, with RS485 interface. Features:INPUT: 1 input for current measurement, 1 input for voltage measurementOUTPUT: Interface: RS485 - Modbus (ASCII, RTU)Operat..
423,00 zł
MOD-1AO MOD-1AO
2-3 days
Brand: Aspar Model: MOD-1AO
Industrial expansion module, 1 current output 0 ~ 20mA or 4 ~ 20mA, 1 voltage output 0 ~ 10VDC on Modbus RTU, with RS485 interface. Features:OUTPUT: 1 current output 0 ~ 20mA or 4 ~ 20mA, 1 voltage output 0 ~ 10VDCINPUT: Interface: RS485 - Modbus (ASCII, RTU)2 PNP or NP..
423,00 zł
MOD-1TE MOD-1TE
2-3 days
Brand: Aspar Model: MOD-1TE
Industrial expansion module, 1 universal temperature input for Modbus RTU, with RS485 interface. Features:INPUT: 1 temperature input, universalOUTPUT: Interface: RS485 - Modbus (ASCII, RTU)Support for thermoresistive sensors PT100, PT500, PT1000, NI100, KTY81-110 (2 or ..
423,00 zł
I-7560 CR I-7560 CR
Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7560 CR
Industrial USB to RS-232 Converter. The I-7560/I-7560U provides a Windows serial COM port via it's USB connection and is compatible with new and legacy RS-232 devices. USB Plug-and-Play allows easy serial port expansion and requires no IRQ, DMA, or I/O port settings man..
437,10 zł
NP302T-2D(RS-232) - Industrial, 2-port RS-232 serial device server with one Ethernet port NP302T-2D(RS-232) - Industrial, 2-port RS-232 serial device server with one Ethernet port
Shipping 24h Test for Free! 6 year warranty
Brand: 3onedata Model: NP302T-2D(RS-232)
Industrial, 2-port RS-232 serial device server with one Ethernet port. High quality, industrial grade 2-port serial to Ethernet server, it can satisfy some kinds of customer requirements in consumption, temperature, volume and handle ability. It provides 2 port RS232 (R..
445,23 zł
MOD-4DI-M
2-3 days
Brand: Aspar Model: MOD-4DI-M
Industrial expansion module, 4 digital inputs with FRAM memory to Modbus RTU, with RS485 interface. Features:INPUT: 4 digital inputs with memoryOUTPUT: RS485 - Modbus Slave (ASCII, RTU)Mounting on a DIN rail4 configurable 32-bit countersFRAM - non-volatile random-access..
446,50 zł
4-port industrial RS-485 HUB with 2000V optoisolation - SW4485I 4-port industrial RS-485 HUB with 2000V optoisolation - SW4485I
Shipping 24h Test for Free! 6 year warranty
Brand: 3onedata Model: SW4485I
4-port RS485 HUB with 2000V optoisolation for RS-485 system in complicated electromagnetic environment. It supports a transmission rate up to 115.2KBPS, and adopts two-way transparent transmission, which allows one RS-485 bus or one RS-232 bus to be divided into 4 RS-48..
450,07 zł
IMC100-1T1F(M) IMC100-1T1F(M)
6 year warranty 5-10 days
Brand: 3onedata Model: IMC100-1T1F(M)
Industrial media converter, Ethernet to fiber, DIN rail mount, working temperature -40°C to 75°C. 5 years manufacturer's warranty. 1 port 10/100Base-T(X) and 1 port 100Base-FX, multi-mode. IMC100 series are unmanaged industrial media converters. This series have 14 prod..
451,20 zł
tM-P3R3 CR tM-P3R3 CR
Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tM-P3R3 CR
3-channel Isolated Digital Input and 3-channel Relay Output Module.The tM-P3R3 provides 3 channels for digital input and 3 channels for relay output, each of which features photocouple isolation. All output channels are form A type relays, while input is based on sink- ..
455,90 zł
Industrial LTE 4G gateway with Ethernet, RS232 and RS485 for IoT and automation – TRB246
New Shipping 24h Test for Free! 2 year warranty -20 %
Brand: Teltonika Model: TRB246
TRB246 – industrial LTE 4G gateway for Ethernet and RS232/RS485 communication.TRB246 is a compact industrial LTE 4G communication gateway from Teltonika Networks, designed for IoT, industrial automation, energy and critical infrastructure applications. ..
460,04 zł 575,00 zł
SC-4104-W1 CR SC-4104-W1 CR
Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: SC-4104-W1 CR
Lighting Control Module with 1-channel AC Digital Input, 4-channel Relay Output and 1-channel Thermistor Input. SC-4104-W1 is an easy-to-use smart control module. It can be used in small FCU control system and small lighting control system. SC-4104-W1 requires no specia..
460,60 zł
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