Recorded listings
31
Recorded quantity sold
69
Median recorded price
$40.0030 US-dollar records
Recorded price range
$16.99to $950.00 USD
First listing start: 02 Oct 2017Last listing start: 14 Apr 2026

Recorded price history

USD
Recorded US-dollar price historyLinear price scale. Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months.0.00500.001000.001500.002000.00Oct 2017Nov 2019Jan 2022Feb 2024Apr 20262017-10-02: US$29.99; no sale recorded2020-04-29: US$39.99; no sale recorded2020-05-01: US$23.00; sold recorded2020-09-11: US$63.99; no sale recorded2020-09-11: US$16.99; no sale recorded2020-10-25: US$35.00; sold recorded2020-12-13: US$35.00; sold recorded2021-01-19: US$55.00; no sale recorded2022-05-16: US$180.00; no sale recorded2022-07-01: US$81.00; no sale recorded2022-09-30: US$118.97; no sale recorded2023-01-06: US$20.00; no sale recorded2023-08-24: US$37.99; sold recorded2023-08-26: US$57.00; sold recorded2023-09-27: US$80.00; no sale recorded2023-09-27: US$199.99; sold recorded2024-01-31: US$49.99; sold recorded2024-01-31: US$17.60; sold recorded2024-01-31: US$950.00; no sale recorded2024-09-17: US$55.00; sold recorded2024-10-21: US$40.00; sold recorded2024-12-04: US$29.99; no sale recorded2025-01-07: US$40.00; sold recorded2025-03-09: US$40.00; no sale recorded2025-03-10: US$20.00; sold recorded2025-04-14: US$40.00; sold recorded2025-05-15: US$28.49; no sale recorded2025-06-12: US$118.50; no sale recorded2025-07-29: US$118.50; no sale recorded2026-04-14: US$95.00; no sale recordedRecorded US-dollar price historyLinear price scale. Horizontal axis: listing start date. Vertical axis: recorded price in US dollars. Filled dots have recorded sales; open dots have no recorded sales. The oxide step line shows calendar-month medians, with gaps for missing months.0.00500.001000.001500.002000.00Oct 2017Jan 2022Apr 20262017-10-02: US$29.99; no sale recorded2020-04-29: US$39.99; no sale recorded2020-05-01: US$23.00; sold recorded2020-09-11: US$63.99; no sale recorded2020-09-11: US$16.99; no sale recorded2020-10-25: US$35.00; sold recorded2020-12-13: US$35.00; sold recorded2021-01-19: US$55.00; no sale recorded2022-05-16: US$180.00; no sale recorded2022-07-01: US$81.00; no sale recorded2022-09-30: US$118.97; no sale recorded2023-01-06: US$20.00; no sale recorded2023-08-24: US$37.99; sold recorded2023-08-26: US$57.00; sold recorded2023-09-27: US$80.00; no sale recorded2023-09-27: US$199.99; sold recorded2024-01-31: US$49.99; sold recorded2024-01-31: US$17.60; sold recorded2024-01-31: US$950.00; no sale recorded2024-09-17: US$55.00; sold recorded2024-10-21: US$40.00; sold recorded2024-12-04: US$29.99; no sale recorded2025-01-07: US$40.00; sold recorded2025-03-09: US$40.00; no sale recorded2025-03-10: US$20.00; sold recorded2025-04-14: US$40.00; sold recorded2025-05-15: US$28.49; no sale recorded2025-06-12: US$118.50; no sale recorded2025-07-29: US$118.50; no sale recorded2026-04-14: US$95.00; no sale recorded
Sold recordedNo sale recordedMonthly median

Linear price scale. Dates are listing starts.

Median recorded price, all years$40.00

30 plotted records from 30 US-dollar records in this range. Monthly medians use all records in each calendar month.

Archived listings

31 recorded listings
Listing startArchived listingConditionRecorded priceQty soldArchive statusCountry
25 Oct 2020Siemens FDO421 Intelligent Smoke Detector S54320-F6-A1 Desigo *Free Shipping*eBay 124405974029New - Open box$35.0010Sold recordedUS
11 Sep 2020Siemens FDOT421 S54320-F6-A1 XLS Multi Sensor Fire Alarm Smoke Heat DetectoreBay 114403722205Used$16.990No sale recordedUS
11 Sep 2020(4) Siemens FDOT421 S54320-F6-A1 XLS Multi Sensor Fire Alarm Smoke Heat DetectoreBay 124334430135Used$63.990No sale recordedUS
01 May 2020New Siemens FDOT421 Smoke Detector And Heat For XLS,Desigo Sys S54320-F6-A1eBay 124172641637New$23.0011Sold recordedUS
29 Apr 2020SIEMENS FDOT421 MULTI-SENSOR SMOKE DETECTOR S54320-F6-A1 eBay 324150492992New - Open box$39.990No sale recordedUS
02 Oct 20172 Siemens FDO421 S54320-F6-A1 FireFinder XLS Fire Alarm Smoke Detector Head eBay 182802916140Used$29.990No sale recordedUS
How to read these records

Dollar amounts are recorded US-dollar prices. Bracketed labels identify other marketplaces, whose currency was not recorded. Recorded quantities sold indicate marketplace activity. Recorded active is the status retained in the archive.

Browse neighboring part numbers by prefix

Search current eBay listings