Home / Honeywell / Honeywell Fire Detectors & Manual Call Points / 2D51 InnovairFlex™ 2D51 Duct Smoke Detector

Available on request

Honeywell – 2D51 InnovairFlex™ 2D51 Duct Smoke Detector

MPN: 2D51 · Brand: Honeywell

Price on request

Discontinued by Honeywell — we can still source the original 2D51 (new, used or refurbished, subject to availability). Request a quote below.

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Honeywell Fire Detectors & Manual Call Points
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the 2D51 now that it is discontinued?

Yes. Honeywell has discontinued the 2D51, 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 2D51 be shipped?

2D51 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 2D51 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 2D51 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 2D51, subject to availability and destination.

2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 fpm). Pendant or plenum mounted 2D51 detectors are intended to be installed into B210LP bases and wired to a D4P120 power board only control units. D4P120 power boards are capable of controlling up to two 2D51 sensors. Pendant mounted in a standard electrical boxes within ducts, the twist-in/twist-out heads allows easy removal from bases for quick cleaning and maintenance. 2D51 heads can be locally tested using a magnet or by using the test/reset pushbutton on the D4P120 power board. Features & Benefits:

Low standby current

Two LEDs blink in standby

Field sensitivity metering of detector to meet the requirements of NFPA 72 with the use of RTS2/RTS2-AOS and SENS-RDR

Designed for mounting on a standard electrical box

SEMS screws for easy wiring and positive wire retention

Removable cover and insect screen for field cleaning

Remote push button test/reset, LEDs provide visual indications

Onboard supervisory and alarm relays

Accepts 24 or 120V supply voltage

Interconnect up to 100 units for common functionsCertifications:

UL Listed

FM Approved

CSFM

Honeywell Farenhyt, Gamewell-FCI, NOTIFIER 2D51 — 2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 FPM). 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.