UN-RL1644ES24NMC Honeywell Optimizer Unitary Controller (24V)
Discontinued by Honeywell — we can still source the original UN-RL1644ES24NMC (new, used or refurbished, subject to availability). Request a quote below.
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Quick facts
| Availability | Confirmed on request |
| Category | Honeywell Building Management Systems (BMS) |
| Lifecycle | Discontinued |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
Can I still buy the UN-RL1644ES24NMC now that it is discontinued?
Yes. Honeywell has discontinued the UN-RL1644ES24NMC, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.
When can UN-RL1644ES24NMC be shipped?
UN-RL1644ES24NMC is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up UN-RL1644ES24NMC in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for UN-RL1644ES24NMC and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for UN-RL1644ES24NMC, subject to availability and destination.
Honeywell Optimizer Unitary Controllers provide flexible, freely programmable, demand-led control that delivers tangible benefits to reduce energy spending while driving new levels of functionality and efficiency in today’s buildings.They offer performance-based engineering with Niagara 4 and enable Single-Tool-Engineering throughout the whole Building Management System with cost-effective installation. These controllers contain integrated Bluetooth for an easy connection to commissioning apps.
Features & Benefits:
Ideal for fan coils, split systems, unitary vents, air handlers, or other self-contained units
Daisy chain ethernet connection ensures reliable data speed over greater distance
T1L technology allows you to upgrade to IP without having to rewire your network
Connect to the controller via Bluetooth® Low Energy (BLE). Easy pairing, no need to open the ceiling for recalibration
Secure communication. Your OT network can be as secure as your IT
Mounting in fuse boxes on DIN rails or walls
Relays which can handle up to 277 VAC and high inrush current (100 A)
Power supply 24 VAC or DC
Optional terminal covers and strain relief via cable ties
Convenient retrofit for prior Honeywell models
Color-coded screw terminals to better identify function and placement can be swapped without disconnecting wires
Certifications:
CE mark
UL 916
UL/ULC 60730-1
FCC/IC Product Class B
Honeywell UN-RL1644ES24NMC — A part of the Honeywell Optimizer Suite, the Honeywell Optimizer Unitary Controller allows you to wire them or connect wirelessly – even take advantage of groundbreaking twisted pair T1L technology. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.
Specifications
Product
| Lifecycle | Discontinued by Honeywell |
Ordering codes
| Part numbers on this product page | UN-RL1644ES24NMC, UN-RL1644ESB24NMC, UN-RL1644MS24NMC, UN-RL1644MSB24NMC, UN-RL1644TS24NMC, UN-RL1644TSB24NMC, UN-RLXE24-BLK100, UN-RLXE24-BLK200, UN-RLXE24-BLK50, UN-RLXEB24-BLK100, UN-RLXEB24-BLK200, UN-RLXEB24-BLK50, UN-RLXM24-BLK100, UN-RLXM24-BLK200, UN-RLXM24-BLK50, UN-RLXMB24-BLK100, UN-RLXMB24-BLK200, UN-RLXMB24-BLK50, UN-RLXT24-BLK100, UN-RLXT24-BLK200, UN-RLXT24-BLK50, UN-RLXTB24-BLK100, UN-RLXTB24-BLK200, UN-RLXTB24-BLK50, UN-RS0844ES24NMC, UN-RS0844ESB24NMC, UN-RS0844MS24NMC, UN-RS0844MSB24NMC, UN-RS0844TS24NMC, UN-RS0844TSB24NMC |
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