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Available on request

Honeywell – D4240 D4240 Photoelectric Duct Smoke Detector

Name: Honeywell – D4240 D4240 Photoelectric Duct Smoke Detector
Brand: Honeywell
SKU: D4240

MPN: D4240 · Brand: Honeywell

Price on request

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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 Building Sensors & Detectors
Lifecycle	Active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can D4240 be shipped?

D4240 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 D4240 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 D4240 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 D4240, subject to availability and destination.

D4240 photoelectric duct smoke detectors are 4-wire detectors that feature pivoting housings that fit both square and rectangular footprints and mount to round or rectangular ductwork. They operate in airflow speeds of 100 to 4,000 fpm, in temperatures of –4 to 158 °F, and a humidity range of 0 to 95% (non-condensing). Their plug-in sensor heads offer improved false-alarm immunity and simple installation, testing, and maintenance. An improved cover design isolates the sensor head from the low-flow feature for simple maintenance. The InnovairFlex® housings provide ample wiring space, 3/4-inch conduit knockouts, and built-in short-circuit protection to prevent damage to sensitive components during installation.

High-contrast terminal designations make wiring easy. With its 2:1 sensor-to-power capability, the power board of the D4240 may be used to monitor a second sensor, D4S, simultaneously (i.e., supply and return side). As many as 50 InnovairFlex detectors can be interconnected. When one unit senses smoke, all interconnected detectors will switch their relays; only the detector sensing smoke will go into alarm, enabling the fire location to be pinpointed. Features & Benefits:

Photoelectric, integrated low-flow technology

Air velocity rating from 100 to 4,000 fpm (0.5 to 20.32 m/s)

Plug-in sensor offers superb false-alarm immunity and the latest sensor technology

Patented sampling tube installs from the front or back of the detector with no tools required

Patented interconnect feature for multi-fan shutdown

Built-in short-circuit protection from operator wiring errors

Field-selectable settings for configuring the detector

Two DPDT Form C relay contacts

24V AC/DC or 240V AC

Backward compatibility with existing Innovair products, including remote accessoriesCertifications:

UL Listed

FM Approved

Honeywell System Sensor D4240 — D4240 photoelectric duct smoke detectors are 4-wire detectors that feature pivoting housings that fit both square and rectangular footprints and mount to round or rectangular ductwork. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.