*Image shown is a representation only. Actual product may vary
2-Year Radwell Warranty
Specifications
- Part # FDO421
- Category Fire Safety
- Category Fire Detector
- Weight 0.20 lbs
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 authorized 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 authorization by any rights holder.
Prop65 View Prop65 Warning
Last Value Update: 7/7/2026
FDO421
Change Location
2-Year Radwell Warranty
Specifications
- Part # FDO421
- Category Fire Safety
- Category Fire Detector
- Weight 0.20 lbs
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 authorized 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 authorization by any rights holder.
Prop65 View Prop65 Warning
Last Value Update: 7/7/2026
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Price Guarantee
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New Product
Never Used Original Packaging
Never Used Radwell Packaging
Refurbished
Authorized Line
NEW
- Includes direct authorized product from OEM.
- Also includes product that is not authorized 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 necessarily 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-Authorized Line
NEW
- Includes direct authorized product from OEM.
- Also includes product that is not authorized 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 necessarily 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
- 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 authorized 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
- 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 authorized 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
- 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
Substitute Options