PermitsPros is a California and nationwide permit expediting firm specializing in building permits and fire protection. Since 2008. This page pairs the FSP-951's manufacturer specs with the two things a spec search actually needs next: its California listing path and its permit path.
The device, from the manufacturer's data sheet
The FSP-951 is Notifier's intelligent plug-in photoelectric smoke detector. Source: Notifier data sheet DN-60977 (rev. A, 4/17/18; rev. B, 7/1/2019 in circulation).
- Sensing: photoelectric, enhanced optical sensing chamber; published UL sensitivity range 0.5 to 4.0 %/ft obscuration
- Protocol: designated for FlashScan and CLIP systems — the base FSP-951 is FlashScan only; the -IV suffix designates a CLIP + FlashScan device
- Addressing: rotary decimal address switches — 1–159 on FlashScan systems, 1–99 on CLIP systems
- Power: 15 to 32 VDC peak from the loop; published standby current 200 µA at 24 VDC, LED/max current 4.5 mA at 24 VDC
- Variants: FSP-951 (photoelectric) · FSP-951T (adds dual electronic thermistors — 135°F / 57°C fixed-temperature thermal sensing) · FSP-951R (remote-test capable, for DNR series duct housings)
- Bases: B300-6, B501-WHITE low-profile, ISO-X isolator base, and relay bases — the base is part of the filed device, not an accessory
- Listings (as printed on the data sheet): designed to meet UL 268, 7th edition; UL/ULC listed S911; FM approved; CSFM 7272-0028:0503
The California listing path
California adds a second gate on top of UL: the State Fire Marshal's Building Materials Listing (BML). The FSP-951 family's listing is CSFM 7272-0028:0503, category 7272, printed in the data sheet's own agency listings. Two working rules from the desk: the exact variant is the listing entry — a -951T or -951R is not the plain -951 line — and the listing sheet in the package must be current. BML listings carry issue and expiry dates; "Provide current CA SFM Listing" is a real correction our desk has carried back from a California reviewer this year, word for word in substance.
What the submittal package needs for this device
- Data sheet DN-60977 for the exact variant on the device schedule
- The current CSFM listing sheet (7272-0028:0503) covering that variant
- The base's data sheet/listing where the base is an isolator or relay base, not the plain base
- For duct use: the housing's paperwork alongside the head's — see the D4120 and duct detector permit pages
- The system's battery calculations and voltage-drop calculations
The permit path
Detectors ride the project's fire alarm permit, reviewed by the fire prevention division or district. Adding or moving detectors is reviewed work; an exact like-for-like head swap may be minor in some jurisdictions — thresholds vary by jurisdiction. PermitsPros assembles the full package, files it, carries corrections, and delivers the issued permit: $250 filing service or $495 complete package; city and district fees separate. Start at portal.permitspros.com or call (888) 907-9511.
Spec facts on this page are drawn from the manufacturer's own published data sheet, cited by document number. Listing numbers are checked at submittal time — California listings expire and are revised, and reviewers ask for the current sheet.
Questions and answers
Q: What data sheet covers the Notifier FSP-951?
A: Notifier data sheet DN-60977 — revision A is dated 4/17/18, and a later revision B (7/1/2019) is in circulation. It covers the FSP-951 photoelectric detector and its variants, including the FSP-951T with added thermal sensing and the remote-test capable FSP-951R. When a cutsheet is filed, the data sheet identity — DN-60977 — is what ties the paper to the device.
Q: What is the FSP-951's California SFM listing number?
A: CSFM listing 7272-0028:0503, category 7272 — printed in the agency listings on data sheet DN-60977 itself, alongside UL/ULC listing S911 and FM approval. Listings expire and are revised, so the listing sheet pulled for a submittal must be the current one — a stale listing is one of the most common fire alarm corrections in California.
Q: What else goes in the submittal with an FSP-951?
A: The base matters as much as the head. The FSP-951 mounts on bases including the B300-6 standard base, the B501-WHITE low-profile base, the ISO-X isolator base, and relay bases — and bases carry their own listing evidence. A complete package has the detector data sheet, the base sheet where the base is not the plain base, the current CSFM listing showing the exact variant (-951 or -951T or -951R — suffixes are separate listing entries), plus the system's battery and voltage-drop calculations.
Q: Can an FSP-951 be used in a duct housing?
A: Yes — the FSP-951R variant is the remote-test capable detector Notifier designates for use with its DNR series duct detector housings. A duct application files both products' paperwork: the housing's sheet and the head's sheet, with the head's listing — the housing/head split detailed on our duct detector page.