FDO421
£136.36/ea
Price with VAT:
£163.63/ea
FDO421
*Image shown is a representation only. Actual product may vary
2-Year Radwell Warranty
Specifications
- Part No. FDO421
- Category Fire Safety
- Category Fire Detector
- Weight 0.10 kgs
Product Information
Description:
-
FDO421
-
SMOKE DETECTOR
-
OPTICAL
-
PHOTOELECTRIC
-
PLUG-IN
-
2-WIRE
-
16-30 VDC
-
280 AMP
-
0-95% NON CONDENSING
-
SELF-TESTING
-
FACTORY WARRANTY MAY NOT APPLY. RADWELL 2-YEAR WARRANTY INCLUDED
Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.
Last Value Update: 20/02/2026
Manufactured by
SIEMENS
PYROTRONICS
FDO421
2-Year Radwell Warranty
Manufactured by
SIEMENS
PYROTRONICS
Change Location
2-Year Radwell Warranty
Specifications
- Part No. FDO421
- Category Fire Safety
- Category Fire Detector
- Weight 0.10 kgs
Product Information
Description:
-
FDO421
-
SMOKE DETECTOR
-
OPTICAL
-
PHOTOELECTRIC
-
PLUG-IN
-
2-WIRE
-
16-30 VDC
-
280 AMP
-
0-95% NON CONDENSING
-
SELF-TESTING
-
FACTORY WARRANTY MAY NOT APPLY. RADWELL 2-YEAR WARRANTY INCLUDED
Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.
Last Value Update: 20/02/2026
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Product Conditions Described
NEW
Factory New product is product that is new and was sourced through our trusted network of suppliers.
- Includes direct authorised product from OEM.
- Also includes product that is not authorised directly from OEM, for example sourced from a distributor or other trusted suppliers.
- Never powered on or used in a production environment
- Includes all hardware and accessories that come with factory new version of product
- Has original packaging & instructions if applicable
- May or may not have original manufacturers' seal on box
- Does not necesarilly include original manufacturer warranty. If original manufacturer warranty doesn't apply, Radwell's standard 2-year warranty supersedes.
- Excludes unused Allen Bradley Product - see conditions "Surplus Original Packaging" and "Surplus Alternate Packaging"
NEW
Factory New product is product that is new and was sourced through our trusted network of suppliers.
- Includes direct authorised product from OEM.
- Also includes product that is not authorised directly from OEM, for example sourced from a distributor or other trusted suppliers.
- Never powered on or used in a production environment
- Includes all hardware and accessories that come with factory new version of product
- Has original packaging & instructions if applicable
- May or may not have original manufacturers' seal on box
- Does not necesarilly include original manufacturer warranty. If original manufacturer warranty doesn't apply, Radwell's standard 2-year warranty supersedes.
- Excludes unused Allen Bradley Product - see conditions "Surplus Original Packaging" and "Surplus Alternate Packaging"
SOP
Surplus Original Packaging product is product that has never been used and sourced through a surplus supplier
- Never used in a production environment, but may have been powered on for testing.
- No visible signs of handling, use or damage
- Has original packaging if applicable
- May or may not have original manufacturers' seal on box
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- Includes all hardware and accessories that come with factory new version of product
- May or may not include instructions that come with factory new version of product
- Product may be older date codes or series than that available direct from the factory or authorised dealers;
- The products may vary as to country of origin and the language used on the packaging
- Product packaging may show shelf wear
SAP
Surplus Alternate Packaging product is product that has never been used and sourced through a surplus supplier
- Never used in a production environment, but may have been powered on for testing.
- Product may have light superficial signs of handling, but no signs of use or damage
- May or may not have original packaging. If original packaging is unavailable product will generally be packaged in aftermarket or Radwell branded packaging
- May be missing hardware, accessories, or instructions that come with factory new version of product
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- Product may be older date codes or series than that available direct from the factory or authorised dealers
- The products may vary as to country of origin and the language used on the packaging
- Product may have any writing on the box that didn't come from OEM
REM
Refurbished product is product that has been previously used, or is unused but has cosmetic defects that would prevent it from being classified as Surplus Alternate Packaging or Surplus Original Packaging.
- May have been used in a production environment
- May or may not include original packaging, or original packaging may have shelf wear (in which case product may be repackaged in aftermarket or Radwell branded packaging)
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- May be missing hardware, accessories, or instructions that come with factory new version of product
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Price Guarantee
Radwell will beat any competitor's written repair rate by 10%.
A valid written repair rate from a valid competitor must be provided to confirm the price.
We may call the competitor or check their website to verify the lower price, repairability, and testability of the item.
We may call the competitor or check their website to verify the lower price, repairability, and testability of the item.
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New Product
Never Used Original Packaging
Never Used Radwell Packaging
Refurbished
Authorised Line
NEW
Factory New product is product that is new and was sourced through our trusted network of suppliers.
- Includes direct authorised product from OEM.
- Also includes product that is not authorised directly from OEM, for example sourced from a distributor or other trusted suppliers.
- Never powered on or used in a production environment
- Includes all hardware and accessories that come with factory new version of product
- Has original packaging & instructions if applicable
- May or may not have original manufacturers' seal on box
- Does not necesarilly include original manufacturer warranty. If original manufacturer warranty doesn't apply, Radwell's standard 2-year warranty supersedes.
- Excludes unused Allen Bradley Product - see conditions "Surplus Original Packaging" and "Surplus Alternate Packaging"
Non-Authorised Line
NEW
Factory New product is product that is new and was sourced through our trusted network of suppliers.
- Includes direct authorised product from OEM.
- Also includes product that is not authorised directly from OEM, for example sourced from a distributor or other trusted suppliers.
- Never powered on or used in a production environment
- Includes all hardware and accessories that come with factory new version of product
- Has original packaging & instructions if applicable
- May or may not have original manufacturers' seal on box
- Does not necesarilly include original manufacturer warranty. If original manufacturer warranty doesn't apply, Radwell's standard 2-year warranty supersedes.
- Excludes unused Allen Bradley Product - see conditions "Surplus Original Packaging" and "Surplus Alternate Packaging"
Surplus
SOP
Surplus Original Packaging product is product that has never been used and sourced through a surplus supplier
- Never used in a production environment, but may have been powered on for testing.
- No visible signs of handling, use or damage
- Has original packaging if applicable
- May or may not have original manufacturers' seal on box
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- Includes all hardware and accessories that come with factory new version of product
- May or may not include instructions that come with factory new version of product
- Product may be older date codes or series than that available direct from the factory or authorised dealers;
- The products may vary as to country of origin and the language used on the packaging
- Product packaging may show shelf wear
Surplus
SAP
Surplus Alternate Packaging product is product that has never been used and sourced through a surplus supplier
- Never used in a production environment, but may have been powered on for testing.
- Product may have light superficial signs of handling, but no signs of use or damage
- May or may not have original packaging. If original packaging is unavailable product will generally be packaged in aftermarket or Radwell branded packaging
- May be missing hardware, accessories, or instructions that come with factory new version of product
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- Product may be older date codes or series than that available direct from the factory or authorised dealers
- The products may vary as to country of origin and the language used on the packaging
- Product may have any writing on the box that didn't come from OEM
Used, Repaired & Tested
REM
Refurbished product is product that has been previously used, or is unused but has cosmetic defects that would prevent it from being classified as Surplus Alternate Packaging or Surplus Original Packaging.
- May have been used in a production environment
- May or may not include original packaging, or original packaging may have shelf wear (in which case product may be repackaged in aftermarket or Radwell branded packaging)
- Comes with Radwell standard 2-year warranty. Original manufacturer warranty may not apply.
- May be missing hardware, accessories, or instructions that come with factory new version of product
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Substitute Options
For the product:
FDO421
Manufactured by SIEMENS
Ship to:
United Kingdom, ST5 9QZ
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