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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.


I-7065 CR I-7065 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7065 CR
4-channel Isolated Digital Input and 5-channel Relay Output Module using the DCON Protocol. The I-7063 module provides 8 digital input channels and 3 Form A relay output channels, and the 7065 series provides 4 digital input channels and 5 Form A relay output channels. All digital input channels can be used as 16-bit counters. In addition, the digital input channels can be selected either as sink- or source-type via wire connections. The I-7063D ..
606,30 zł
I-7066 CR I-7066 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7066 CR
7-channel PhotoMOS Relay Output Module using the DCON Protocol. Both the I-7066 and the M-7066P feature seven Form A PhotoMOS relay output channels. In comparison to electromechanical relays, the PhotoMOS relays provide a faster response time, greater electrical endurance, higher vibration and shock resistance. There are also no arcing, no bounce, and no switching noise for the PhotoMOS relay. There are options for configuring power-on and safe d..
606,30 zł
I-7520A CR I-7520A CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-7520A CR
Industrial Isolated RS-232 to RS-422/485 Converter. Most industrial computer systems provide standard RS-232 serial ports. Though widely accepted, RS-232 has limited transmission speed, range, and networking capabilities. The RS-422 and RS-485 standards overcome these limitations by using differential voltage lines for data and control signals, which transparently converts RS-232 signals into isolated RS-422 or RS-485 signal with no need to chang..
606,30 zł
I-87057W CR I-87057W CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: I-87057W CR
16-channel Open Collector Isolated Digital Output Module. I-87057PW offers 16 channels for digital output, each of which features Photo-couple isolation. I-87057PW supports sink type output with shortcircuits protection. There are options for power-on value and safe value for your consideration. I-87057PW has 16 LED indicators for DO channel status. 4 kV ESD protection, 3750 VDC intra-module isolation are standard.Features:Support Digital Outputs..
606,30 zł
M-7052 CR M-7052 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: M-7052 CR
8-channel Isolated Digital Input Module using the DCON and Modbus Protocols. The I-7052 offers 6 fully independent channels and 2 common ground channels for digital input. The diffential inputs feature channel-to-isolation. In addition, you can choose either sink- or source-type input via wire connections. All channels are able to be used as 16-bit has 8 LED indicators for DI channel status monitoring. 4 kV ESD protection and 5000 Vrms intra-modu..
606,30 zł
MOD-16O-PNP MOD-16O-PNP
2-3 days
Brand: Aspar Model: MOD-16O-PNP
Industrial expansion module, 16 digital outputs on Modbus RTU, with RS485 interface.Features:OUTPUT: 16 digital outputs PNPINPUT: RS485 - Modbus Slave (ASCII, RTU)Mounting on a DIN railDefault configurable output states when power is turned onPNP type outputs with maximum current up to 0.5ABuilt-in protection diode - Inductive loads without additional protection (contactors, relays, pneumatic and low power hydraulic solenoid valves)LEDs for signa..
606,30 zł
MOD-16RO MOD-16RO
2-3 days
Brand: Aspar Model: MOD-16RO
Industrial expansion module, 16 relay outputs on Modbus RTU, with RS485 interface. Features:OUTPUT: 16 relay outputsINPUT: RS485 - Modbus Slave (ASCII, RTU)Mount: DIN railDomyślnie (konfigurowalne) stany wyjść po włączeniu zasilaniaMaximum current 3A 250V AC / per COM (module has 4 terminals COM: COM1, COM2, COM3, COM4)Maximum current 3A 30V DC / per COM (module has 4 terminals COM: COM1, COM2, COM3, COM4)LEDs for signaling the status of outputs,..
606,30 zł
MOD-6RO MOD-6RO
2-3 days
Brand: Aspar Model: MOD-6RO
Industrial expansion module, 6 relay outputs on Modbus RTU, with RS485 interface. Features:OUTPUT: 6 relay outputsINPUT: RS485 - Modbus Slave (ASCII, RTU)Default configurable output states when power is turned onOutputs both NO and NC typeMaximum current 5A 250V ACMaximum current 10A 24V DCLarge, convenient cable connectors (up to 2.5 mm2)Galvanic isolation of outputsConfiguration: free software2 years warrantyMade in PolandThe 6RO module is an i..
606,30 zł
MOD-8I8O MOD-8I8O
2-3 days
Brand: Aspar Model: MOD-8I8O
Industrial 8-channel Input and 8-channel Digital Output Module to Modbus RTU, with RS485 interface. Cechy:INPUT / OUTPUT: 8 digital inputs, 8 PNP outputsOUTPUT / INPUT: RS485 - Modbus Slave (ASCII, RTU)Mounting on a DIN rail8 configurable 32-bit countersCounter modes: pulse counter, timer, encoderInputs of PNP or NPN type depending on the connectionPNP type outputs with maximum current up to 0.5ABuilt-in protection diode - Inductive loads without..
606,30 zł
MOD-8I8RO MOD-8I8RO
2-3 days
Brand: Aspar Model: MOD-8I8RO
Industrial expansion module, 8 digital inputs and 8 relay outputs on Modbus RTU, with RS485 interface.Features:INPUT / OUTPUT: 8 digital inputs, 8 relay outputsOUTPUT / INPUT: RS485 - Modbus Slave (ASCII, RTU)Mounting on a DIN rail8 configurable 32-bit countersAbility to connect 2 encodersInputs PNP or NPN, depending on the connection8 relay outputs grouped in 2 sections (2 separate COM)Configurable output status after power returnWatchdog functi..
606,30 zł
MOD-8TR MOD-8TR
2-3 days
Brand: Aspar Model: MOD-8TR
Industrial expansion module, 8 triac outputs with maximum current up to 0.5A per channel and 400V to Modbus RTU with RS485 interface. Features:OUTPUT: 8 triac outputs with maximum current up to 0.5A per channel and 400VINPUT: RS485 - Modbus Slave (ASCII, RTU)Default (configurable) output states when power is turned onLarge, convenient cable connectors (up to 2.5 mm2)Galvanic isolation of outputsWatchdog functionMount: DIN rail2 years warrantyMade..
606,30 zł
tET-P2POR2 CR
Quantity discount Warranty 12 months 2-3 weeks
Brand: ICPDAS Model: tET-P2POR2 CR
Tiny Ethernet module with 2 Digital Inputs (Dry Contact) and 2 Form A PhotoMos relay. Providing various digital I/O functions, the tET/tPET series is an IP-based Ethernet I/O monitoring and control module. The module can be remotely controlled through a 10/100 M Ethernet network by using Modbus TCP protocol. Modbus has become a de facto standard communications protocol in industry, and is now the most commonly available means of connecting indust..
606,30 zł
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