Need more information?
Honeywell UN-RL1644MSB230NMC
Niagara Unitary Controller with BLE, RS485 interface
Product Description
The Honeywell Niagara Unitary Controller is a versatile device that supports multiple protocols and offers 16 universal I/Os, 4 relay outputs, and 4 chopper digital outputs. It also features built-in Bluetooth Low Energy (BLE) for wireless connectivity, enabling seamless data exchange between controllers.
This device is compatible with BACnet™ MS/TP for reliable serial communication in building automation systems. It also supports Modbus RTU for integration with third-party devices over serial communication.
The controller offers 16 universal inputs/outputs (UIO) that can be configured as analog inputs, binary inputs, or analog outputs for maximum flexibility. It also features 4 relay outputs designed for high inrush current applications in HVAC control.
The device provides enhanced switching capabilities with its 4 chopper digital outputs (DO CHP). It also supports Sylk™ Bus Interface for direct connection to Honeywell Sylk™ wall modules.
The Niagara 4-Based Engineering ensures unified programming and management within the building automation system. The device also features a built-in web server with HTML5 for remote access and graphical interface.
The controller comes with a larger enclosure design, providing additional space for wiring and installation flexibility. It offers flexible mounting options such as DIN rail, surface mounting, or enclosure installation.
Need more information?
Offer details
- Offer from:
Trusted supplier — Poland, member since 2023, 5–9 employees
- Availability:
- On requestLead time: 4–5 days
- Warranty:
- 24 months
- Condition:
- New Factory Sealed
Specifications
- Brand
- Honeywell
Available Offers
(1)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
![]() | Condition New Factory Sealed | Availability On requestLead time: 4–5 days | Supplier | Warranty 24 months |
Offer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Documents
Data Sheet
Datasheet for Honeywell UN-RL1644MSB230NMC, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 16-09-2026

Market insights for UN-RL1644MSB230NMC
Get real-time analytics and market data for UN-RL1644MSB230NMC and similar products to optimize your purchasing decisions
- Real-time stock availability data from 700 MRO distributors in Europe and USA
- Price analysis by condition (new, used, refurbished) with market median prices
- Critical component availability monitoring to prevent production downtime

