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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.


Model3012-M
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: Model3012-M
Industrial Ethernet to multi-mode fiber media converter with 1 Gigabit Ethernet port and 1 Gigabit fiber port. Model3012 is an adaptive Gigabit Ethernet to fiber converter uses the switching technology to conduct media conversion, which meets the standards of IEEE802.3, IEEE802.3u, IEEE802.3z and IEEE802.3ab. This kind of media converter supports two types of media network connections: 10Base-T/100Base-TX/1000Base-T and 1000Base-SX/LX. Model3012 ..
295,11 zł
NP301 NP301
Shipping 24h Test for Free! 6 year warranty Quantity discount
Brand: 3onedata Model: NP301
Industrial, universal 1-port RS-232/422/485 serial device server with one Ethernet port. It provides 1 port RS-232/485/422 (RS232, DB9M; RS485/422, 5 bit terminal block) and 1 port 10/100Base-T(X). It makes them ideal choice for connecting decentral serial devices and Host computer to an IP based Ethernet, making it easily and conviniently for your management. Its software can be setting and updating by serial program group in the application. ..
321,48 zł
Model3012-S Model3012-S
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: Model3012-S
Industrial Ethernet to single-mode fiber media converter with 1 Gigabit Ethernet port and 1 Gigabit fiber port. Model3012 is an adaptive Gigabit Ethernet to fiber converter uses the switching technology to conduct media conversion, which meets the standards of IEEE802.3, IEEE802.3u, IEEE802.3z and IEEE802.3ab. This kind of media converter supports two types of media network connections: 10Base-T/100Base-TX/1000Base-T and 1000Base-SX/LX. Model3012..
332,01 zł
Model3012-SS
6 year warranty Quantity discount -3 % 5-10 days
Brand: 3onedata Model: Model3012-SS
Industrial Ethernet to single-mode, single fiber media converter with 1 Gigabit Ethernet port and 1 Gigabit fiber port. Model3012 is an adaptive Gigabit Ethernet to fiber converter uses the switching technology to conduct media conversion, which meets the standards of IEEE802.3, IEEE802.3u, IEEE802.3z and IEEE802.3ab. This kind of media converter supports two types of media network connections: 10Base-T/100Base-TX/1000Base-T and 1000Base-SX/LX. M..
322,05 zł 332,01 zł
LC-103 CR LC-103 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: LC-103 CR
1-channel AC Digital Input and 3-channel Relay Output Lighting Control Module. The LC-103 is an easy-to-use lighting control module that requires no specialist skills to install and operate, and no software is needed in order to control the DO channels.The LC-103 provides 1 channel for digital input (photo couple isolation) and 3 channels for relay output. All output channels are form A type relays, while the input channel is based on a sink-type..
333,70 zł
LC-101 CR LC-101 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: LC-101 CR
1-channel AC Digital Input and 1-channel Relay Output Lighting Control Module with screw mount. The LC-101 is an easy-to-use lighting control module that requires no specialist skills to install and operate, and no software is needed in order to control the DO channels. The LC-101 provides 1 channel for digital input (photo couple isolation) and 1 channel for relay output. The output channel is form C type relay, while the input channel is based ..
343,10 zł
LC-101DIN CR LC-101DIN CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: LC-101DIN CR
1-channel AC Digital Input and 1-channel Relay Output Lighting Control Module with DIN rail mount. The LC-101 is an easy-to-use lighting control module that requires no specialist skills to install and operate, and no software is needed in order to control the DO channels. The LC-101 provides 1 channel for digital input (photo couple isolation) and 1 channel for relay output. The output channel is form C type relay, while the input channel is bas..
352,50 zł
ECU101-1F
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: ECU101-1F
Industrial Media Converter Management Card with 1 Fast Ethernet port and 1 Fiber port. ECU101-1F is 100M industrial media converter unmanaged daughter card. The product provides 100M copper port and fiber ports. It adopts slide-in mounting and could be used matching with the media converter rack RACK2100.The series adopt industrial grade design and support IEEE802.3/802.3u standard. Its copper port supports 10/100M, full/half duplex, MDI/MDI-X se..
368,90 zł
CAN232 CAN232
6 year warranty Quantity discount 5-10 days
Brand: 3onedata Model: CAN232
CAN232 is used for data exchange between CAN-bus field bus and RS-232 bus interface converter, and supports Modbus RTU protocol. CAN232 interface converter integrated a RS-232 channel and a CAN bus channel can be easily embedded using RS-232 interface for communication nodes, do not need to change the original hardware architecture enables the device to obtain the CAN bus communication interface, to achieve between the equipments of RS-232 and ca..
385,40 zł
MOD-2I2O MOD-2I2O
2-3 days
Brand: Aspar Model: MOD-2I2O
Industrial expansion module, 2 digital inputs and 2 digital outputs on Modbus RTU, with RS485 interface. Features:INPUT/OUTPUT: 2 digital inputs/2 digital outputsOUTPUT/INPUT: RS485 - Modbus Slave (ASCII, RTU)Mount: DIN rail2 configurable 32-bit countersCounter modes: pulse counter, timer or encoderInputs of PNP or NPN type depending on the connectionPNP type outputs with maximum current up to 0.25AGalvanic isolation of inputs and outputsWatchdog..
385,40 zł
MOD-4DI MOD-4DI
2-3 days
Brand: Aspar Model: MOD-4DI
Industrial expansion module, 4 digital inputs on Modbus RTU, with RS485 interface. Features:INPUT: 4 digital inputsOUTPUT: Interface: RS485 - Modbus (ASCII, RTU)Mount: DIN rail4 configurable 32-bit countersCounter modes: impulse counter; timer; encoderInputs of PNP or NPN type depending on the connectionGalvanic isolation of inputsLarge, convenient cable connectors (up to 2.5 mm2)Configuration: free software2 years warrantyMade in PolandThe 4DI i..
385,40 zł
MOD-4DO MOD-4DO
2-3 days
Brand: Aspar Model: MOD-4DO
Industrial expansion module, 4 digital outputs on Modbus RTU, with RS485 interface. Features:OUTPUT: 4 digital outputsINPUT: RS485 - Modbus Slave (ASCII, RTU)Mount: DIN railOutputs type PNP, 250mAWatchdog functionComfortable connectors for cables (up to 2.5 mm2)Configuration: free Modbus Configurator2 years warrantyMade in PolandThe MOD-4DO is an innovative device that provides a simple and inexpensive extension of the output lines of popular PLC..
385,40 zł
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