Recorded listings
74
Recorded quantity sold
211
Median recorded price
$40.0074 US-dollar records
Recorded price range
$12.00to $850.00 USD
First listing start: 30 Mar 2017Last listing start: 05 Jun 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.0.00250.00500.00750.001000.00Mar 2017Jun 2019Oct 2021Feb 2024Jun 20262017-03-30: US$20.25; sold recorded2017-04-19: US$39.50; sold recorded2017-08-30: US$50.00; sold recorded2018-01-10: US$27.25; no sale recorded2018-02-02: US$27.25; no sale recorded2018-02-15: US$27.25; no sale recorded2018-03-05: US$27.25; no sale recorded2018-03-14: US$19.58; sold recorded2018-04-14: US$42.00; sold recorded2018-06-29: US$107.95; no sale recorded2019-11-10: US$22.00; no sale recorded2020-02-26: US$29.99; sold recorded2020-06-16: US$29.62; sold recorded2020-09-11: US$39.99; no sale recorded2020-09-11: US$14.75; sold recorded2020-09-23: US$30.00; no sale recorded2020-09-30: US$25.68; sold recorded2020-10-26: US$29.99; sold recorded2020-12-11: US$33.35; sold recorded2020-12-27: US$30.00; sold recorded2022-01-27: US$12.00; sold recorded2022-03-15: US$12.00; no sale recorded2022-04-11: US$19.99; sold recorded2022-05-04: US$63.74; sold recorded2022-05-07: US$37.50; sold recorded2022-05-15: US$24.99; no sale recorded2022-10-07: US$29.99; no sale recorded2022-10-17: US$15.00; sold recorded2022-10-17: US$20.00; sold recorded2022-10-25: US$30.00; no sale recorded2023-04-19: US$39.00; no sale recorded2023-04-28: US$29.99; no sale recorded2023-04-28: US$129.99; no sale recorded2023-05-06: US$26.63; no sale recorded2023-06-26: US$75.00; sold recorded2023-08-05: US$34.99; sold recorded2023-08-20: US$69.99; sold recorded2023-08-23: US$28.99; no sale recorded2023-08-30: US$26.50; sold recorded2023-09-05: US$45.00; no sale recorded2023-11-06: US$25.00; sold recorded2024-05-07: US$48.89; sold recorded2024-05-29: US$29.49; sold recorded2024-06-13: US$55.00; sold recorded2024-08-05: US$15.20; sold recorded2024-08-05: US$100.00; sold recorded2024-09-08: US$40.00; no sale recorded2024-09-18: US$55.00; sold recorded2024-10-13: US$48.00; sold recorded2024-10-19: US$100.00; no sale recorded2024-10-19: US$50.00; sold recorded2024-11-08: US$242.98; no sale recorded2024-11-08: US$850.00; no sale recorded2024-11-29: US$42.00; sold recorded2024-12-04: US$29.99; no sale recorded2024-12-21: US$80.00; no sale recorded2025-03-16: US$68.20; sold recorded2025-04-20: US$65.00; no sale recorded2025-04-29: US$64.99; no sale recorded2025-05-30: US$109.00; no sale recorded2025-06-11: US$59.50; no sale recorded2025-08-22: US$60.00; no sale recorded2025-10-10: US$110.00; no sale recorded2025-11-08: US$83.58; no sale recorded2025-11-29: US$74.52; no sale recorded2025-12-18: US$69.95; no sale recorded2026-01-02: US$63.99; no sale recorded2026-01-13: US$60.00; no sale recorded2026-02-20: US$75.00; no sale recorded2026-03-27: US$24.72; no sale recorded2026-04-02: US$131.00; no sale recorded2026-04-30: US$60.00; no sale recorded2026-05-18: US$74.00; no sale recorded2026-06-05: US$70.00; 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.0.00250.00500.00750.001000.00Mar 2017Oct 2021Jun 20262017-03-30: US$20.25; sold recorded2017-04-19: US$39.50; sold recorded2017-08-30: US$50.00; sold recorded2018-01-10: US$27.25; no sale recorded2018-02-02: US$27.25; no sale recorded2018-02-15: US$27.25; no sale recorded2018-03-05: US$27.25; no sale recorded2018-03-14: US$19.58; sold recorded2018-04-14: US$42.00; sold recorded2018-06-29: US$107.95; no sale recorded2019-11-10: US$22.00; no sale recorded2020-02-26: US$29.99; sold recorded2020-06-16: US$29.62; sold recorded2020-09-11: US$39.99; no sale recorded2020-09-11: US$14.75; sold recorded2020-09-23: US$30.00; no sale recorded2020-09-30: US$25.68; sold recorded2020-10-26: US$29.99; sold recorded2020-12-11: US$33.35; sold recorded2020-12-27: US$30.00; sold recorded2022-01-27: US$12.00; sold recorded2022-03-15: US$12.00; no sale recorded2022-04-11: US$19.99; sold recorded2022-05-04: US$63.74; sold recorded2022-05-07: US$37.50; sold recorded2022-05-15: US$24.99; no sale recorded2022-10-07: US$29.99; no sale recorded2022-10-17: US$15.00; sold recorded2022-10-17: US$20.00; sold recorded2022-10-25: US$30.00; no sale recorded2023-04-19: US$39.00; no sale recorded2023-04-28: US$29.99; no sale recorded2023-04-28: US$129.99; no sale recorded2023-05-06: US$26.63; no sale recorded2023-06-26: US$75.00; sold recorded2023-08-05: US$34.99; sold recorded2023-08-20: US$69.99; sold recorded2023-08-23: US$28.99; no sale recorded2023-08-30: US$26.50; sold recorded2023-09-05: US$45.00; no sale recorded2023-11-06: US$25.00; sold recorded2024-05-07: US$48.89; sold recorded2024-05-29: US$29.49; sold recorded2024-06-13: US$55.00; sold recorded2024-08-05: US$15.20; sold recorded2024-08-05: US$100.00; sold recorded2024-09-08: US$40.00; no sale recorded2024-09-18: US$55.00; sold recorded2024-10-13: US$48.00; sold recorded2024-10-19: US$100.00; no sale recorded2024-10-19: US$50.00; sold recorded2024-11-08: US$242.98; no sale recorded2024-11-08: US$850.00; no sale recorded2024-11-29: US$42.00; sold recorded2024-12-04: US$29.99; no sale recorded2024-12-21: US$80.00; no sale recorded2025-03-16: US$68.20; sold recorded2025-04-20: US$65.00; no sale recorded2025-04-29: US$64.99; no sale recorded2025-05-30: US$109.00; no sale recorded2025-06-11: US$59.50; no sale recorded2025-08-22: US$60.00; no sale recorded2025-10-10: US$110.00; no sale recorded2025-11-08: US$83.58; no sale recorded2025-11-29: US$74.52; no sale recorded2025-12-18: US$69.95; no sale recorded2026-01-02: US$63.99; no sale recorded2026-01-13: US$60.00; no sale recorded2026-02-20: US$75.00; no sale recorded2026-03-27: US$24.72; no sale recorded2026-04-02: US$131.00; no sale recorded2026-04-30: US$60.00; no sale recorded2026-05-18: US$74.00; no sale recorded2026-06-05: US$70.00; no sale recorded
Sold recordedNo sale recordedMonthly median

Linear price scale. Dates are listing starts.

Median recorded price, all years$40.00

74 plotted records from 74 US-dollar records in this range. Monthly medians use all records in each calendar month.

Archived listings

74 recorded listings
Listing startArchived listingConditionRecorded priceQty soldArchive statusCountry
05 Jun 2026Siemens FDO421 Smoke Detector Head S54320-F4-A1 Fire Alarm NEWeBay 278055706384New$70.000Recorded activeUS
18 May 2026Siemens FDO421 Photoelectric Detector P/N: S54320-F4-A1eBay 168384713953New$74.000Recorded activeUS
30 Apr 2026Siemens FDO421 Smoke Detector Head S54320-F4-A1 Fire Alarm NEWeBay 277943507919New$60.000Recorded activeUS
02 Apr 2026For New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 198249573640New$131.000Recorded activeCN
27 Mar 2026Siemens S54320-F4-A1 - USED/GREAT CONDITIONeBay 257428992443Used$24.720Recorded activeUS
20 Feb 2026Siemens FDO421 Photoelectric Detector P/N: S54320-F4-A1eBay 327011110463New$75.000Recorded activeUS
13 Jan 2026Siemens FDO421 Smoke Detector Head S54320-F4-A1 Fire Alarm NEWeBay 277647400645New$60.000Recorded activeUS
02 Jan 2026New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 277622590222New$63.990Recorded activeUS
18 Dec 2025Siemens FDO421 Smoke Detector Head Class-X Comp S54320-F4-A1 Fire Alarm NEWeBay 317672757851New$69.950Recorded activeUS
29 Nov 2025FDO421 1PCS Brand New Siemens FDO421 s54320-f4-a1 Fast deliveryeBay 227108034516New$74.520Recorded activeCN
08 Nov 2025New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 406362426863New$83.580Recorded activeCN
10 Oct 2025Siemens FDO421 Photoelectric Detector P/N: S54320-F4-A1eBay 177479773891New$110.000Recorded activeUS
22 Aug 2025New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 396982497762New$60.000Recorded activeUS
11 Jun 2025New Siemens FDO421 Smoke Detector Head Class-X Compat. S54320-F4-A1 Fire AlarmeBay 116647232433New$59.500Recorded activeUS
30 May 2025Siemens FDO421 Photoelectric Detector P/N: S54320-F4-A1eBay 405911737656New$109.000Recorded activeUS
29 Apr 2025New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 256911796719New$64.990Recorded activeUS
20 Apr 2025New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 335922741288New$65.000Recorded activeUS
16 Mar 2025New Siemens FDO421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 286413605407New$68.201Sold recordedCN
21 Dec 2024Siemens FDO421 - S54320-F4-A1 SMOKE DETECTOR (SEALED)eBay 235880248299New$80.000Recorded activeUS
04 Dec 2024Siemens FDOT421 Multi-Sensor Smoke Detector S54320-F4-A1eBay 135421233466Used$29.990Recorded activeUS
29 Nov 2024Siemens FD0421 Smoke Detector Head Class-X Comp. S54320-F4-A1 Fire AlarmeBay 356320232359New - Open box$42.001Sold recordedUS
08 Nov 2024Siemens HD Safety Switch HF 366 NRA 600 Amp 600 Volt eBay 395881306846Used$850.000Recorded activeUS
08 Nov 2024Lot of 8 Siemens FDO421 | S54320-F4-A1 Smoke DetectorseBay 156503643362Used$242.980Recorded activeUS
19 Oct 2024Siemens Boltshield 2-Pole Plug-in Surge Protection Device (QSPD2A035B)eBay 176637371929New$50.001Sold recordedUS
19 Oct 2024NEW Siemens S54320-F4-A1 SMOKE DETECTOR FDO421 FIRE ALARM MULTI SENSOReBay 375723844702New - Open box$100.000Recorded activeIN
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.

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