Siemens FDOT421 Addressable Multi Criteria Fire Detector

SKU: 63313
Manufacturer Part #: FDOT421
Secondary Part #: S54320-F6-A1
Condition: New
Brand: Siemens
Status: Active

Multi Criteria Fire Detector, Smoke Heat

Original price was: $148.57.Current price is: $141.49.

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Description

The Siemens FDOT421 is an intelligent addressable multi-criteria fire detector that combines photoelectric smoke sensing and thermal detection in a single device. It is designed to improve fire detection accuracy by analyzing multiple environmental factors, reducing false alarms while maintaining reliable response to real fire conditions.

Using advanced signal processing and neural network algorithms, the FDOT421 evaluates both smoke and heat data to distinguish between actual fire events and nuisance conditions such as dust or steam. This makes it suitable for a wide range of commercial applications, including open areas and air duct installations.

The detector features built-in ISOtechnology for enhanced SLC circuit reliability and fault isolation, along with continuous self-diagnostics to ensure proper operation. It integrates seamlessly with Siemens Desigo Fire Safety and FireFinder XLS/V systems and is installed using compatible plug-in mounting bases for efficient maintenance and replacement.

Documents

Description

The Siemens FDOT421 is an intelligent addressable multi-criteria fire detector that combines photoelectric smoke sensing and thermal detection in a single device. It is designed to improve fire detection accuracy by analyzing multiple environmental factors, reducing false alarms while maintaining reliable response to real fire conditions.

Using advanced signal processing and neural network algorithms, the FDOT421 evaluates both smoke and heat data to distinguish between actual fire events and nuisance conditions such as dust or steam. This makes it suitable for a wide range of commercial applications, including open areas and air duct installations.

The detector features built-in ISOtechnology for enhanced SLC circuit reliability and fault isolation, along with continuous self-diagnostics to ensure proper operation. It integrates seamlessly with Siemens Desigo Fire Safety and FireFinder XLS/V systems and is installed using compatible plug-in mounting bases for efficient maintenance and replacement.

Additional information

Weight 0.2 lbs
Dimensions 4.50 × 4.50 × 2.00 in
Manufacturer

Siemens Industry, Inc.

Brand

Siemens

Condition

New

Unit of Measurement

EA (Each)

Type

Detector

Style

Plug-In

Detectable Medium

Heat, Smoke

Detection Method

Fixed Temperature, Photoelectric, Rate-of-Rise

Programming

DPU

Production Status

Active

Reviews

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Attributes

Additional information

Weight 0.2 lbs
Dimensions 4.50 × 4.50 × 2.00 in
Manufacturer

Siemens Industry, Inc.

Brand

Siemens

Condition

New

Unit of Measurement

EA (Each)

Type

Detector

Style

Plug-In

Detectable Medium

Heat, Smoke

Detection Method

Fixed Temperature, Photoelectric, Rate-of-Rise

Programming

DPU

Production Status

Active

Product Features

• Combines smoke and heat detection for improved fire recognition and reduced false alarms
• Uses neural network processing to analyze fire signatures and environmental conditions
• Enhances system reliability with built-in ISOtechnology for fault isolation
• Performs continuous self-diagnostics and sensitivity monitoring
• Supports flexible configuration with selectable detection profiles and thermal modes
• Provides clear status indication through tri-color LED with 360° visibility
• Simplifies installation with plug-in design and polarity-insensitive wiring

What's Included

• Detector head
• Protective dust cover

Shipping Details

Pricing & Lead Times are based on details provided directly by the manufacturer, our network of distributors and based on historical lead times on any given product. This is the most up-to-date information we have currently. All orders are subject to 1–5 days of processing as the units must go through our product verification process at our main Shipping Hub in New York prior to being shipped out to you. Depending on your circumstances, we can expedite this processing time for additional costs, but orders cannot be expedited unless they are currently in stock.

PLEASE NOTE: Any and all pricing and availability are subject to change without notice being given to the client. This product may be sourced from the manufacturer or supplier. If so, manufacturer cancellation fees may apply if the order is cancelled after processing. See our Terms of Sale for details.

Return Details

Equipment must be returned within (30) days of the date it was shipped, or made ready for pickup. In order to initiate a return, you must contact our sales team via email at [email protected] to receive an RMA # if it meets all criteria. Products returned after (30) days from our shipment date will be refused. After RMA acceptance, any parts that are returned to FireAlarm.com are subject to a minimum 25% restocking fee.

New parts must be returned with original packaging, in un-opened, and uninstalled condition. If not, these parts may be subject to increased restocking fees or refusal. Depending on the circumstances of your order, and if you are a long-time customer of FireAlarm.com, other arrangements can be made.

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Siemens DB-11 Low Profile Detector Base
Mfr. Part #: DB-11
SKU: 4607
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Ships in 5 business days

$21.69

Pricing & Availability Details

Pricing & Lead Times are based on details provided directly by the manufacturer, our network of distributors and based on historical lead times on any given product. This is the most up-to-date information we have currently. All orders are subject to 1 – 5 days of processing as the units must go through our product verification process at our main Shipping Hub in New York prior to being shipped out to you. Depending on your circumstances, we can expedite this processing time for additional costs, but orders cannot be expedited unless they are currently in stock. PLEASE NOTE: Any and all pricing and availability are subject to change without notice being given to the client.

Payment Details

You may remit payment via a US-Based Credit Card (CC Authorization Form), Wire Transfer (w/ $30 or $50 fee added to invoice), via PayPal (Or PayPal Pay Later), via Apple or Google Pay, or by mailing us a check. You can also call in with your credit card information at any time: 888-497-0290.

Return & Cancellation Details

Equipment must be returned within (30) days of the date it was shipped, or made ready for pickup. In order to initiate a return, you must contact our sales team via email at [email protected] to receive an RMA # if it meets all criteria. Products returned after (30) days from our shipment date will be refused. After RMA acceptance, any parts that are returned to FireAlarm.com are subject to a minimum 25% restocking fee. New parts must be returned with original packaging, in un-opened, and uninstalled condition. If not, these parts may be subject to increased restocking fees or refusal. Depending on the circumstances of your order, and if you are a long-time customer of FireAlarm.com, other arrangements can be made. See our complete return policy for more information at: https://firealarm.com/faq/