Discontinued Fire-Lite Modules, Detectors & Panels
If you’ve inherited a Fire-Lite system that’s out of warranty, out of parts and out of patience, you’re in the right place. QuickShipFire stocks discontinued Fire-Lite modules, smoke detectors, panel boards and notification devices for legacy MS-9200, MS-9050, SD355 and ES-50X installations across the United States.
Why Fire-Lite Parts Go Obsolete — And Why It Hurts Right Now
Fire-Lite, owned by Honeywell since the late 1990s, has shipped commercial fire alarm equipment under several panel generations: the MS-9050 and MS-9200 conventional/addressable panels, the MS-9200UDLS digital communicator panel, the ES-50X and ES-200X intelligent platforms, and now the ES-FX series. Each generation produced its own SLC devices, modules and detector bases — and each retirement leaves thousands of working systems suddenly orphaned by the authorized distributor channel.
When a Fire-Lite SKU is moved to “End-of-Life” status, three things happen that punish facility managers:
- Distributor stock evaporates within 12-18 months. Once Fire-Lite announces an EOL, the regional distributor network burns down inventory and pivots to current production. After that, the secondary market is the only path.
- The “current equivalent” is rarely a true drop-in. A discontinued SD355 photoelectric detector replaced by an SD365 looks identical from across the room, but panel firmware revisions, base compatibility and SLC polling can all change. What was billed as a sensor swap turns into a panel retrofit.
- The clock is running. NFPA 72 Chapter 14 requires impairments be addressed promptly. A fire watch at $30-$50 an hour, 24/7, is real money — and that’s before insurance and AHJ exposure.
QuickShipFire was built specifically for the gap between when Fire-Lite stops shipping a part and when your building still needs it to work.
Discontinued Fire-Lite Parts Currently in Stock
Below is a working snapshot of the discontinued Fire-Lite components we ship most often. Inventory turns quickly — if your exact model isn’t listed, submit the part number through our quote form and we’ll check the back rooms and our supplier network.
| Model | Description | Replaced By | Availability |
|---|---|---|---|
| SD355 | Photoelectric intelligent smoke detector | SD365 | In Stock |
| SD355T | Photo-thermal combo intelligent detector | SD365T | In Stock |
| MS-9200 | Legacy intelligent FACP boards & modules | MS-9200UDLS / ES-200X | Low Stock |
| MS-9050UD | 10-zone conventional FACP | MS-9050E / ES-50X | Low Stock |
| MMF-300 | Addressable monitor module, single input | MMF-300 (current rev) | In Stock |
| CMF-300 | Addressable control module | CMF-300-6 (relay change) | In Stock |
| BG-12LX | Addressable manual pull station | BG-12LX (rev change only) | In Stock |
| H355 | Intelligent thermal heat detector | H365 | Low Stock |
| D355PL | Photoelectric duct detector housing | D355PL (legacy stock) | Call to Confirm |
| RTM-8F | Relay/transponder module | RTM-8F-EOL | Call to Confirm |
| ANN-80 | LCD annunciator (legacy firmware) | ANN-80-W (current) | In Stock |
| BG-10LX | Single-action pull station | BG-12LX series | Low Stock |
Inventory is updated continuously. Submit a part-number request below for the most current pricing and lead times.
Fire-Lite Cross-Reference & Replacement Guide
The most common question we receive on Fire-Lite obsolete parts: “My panel is calling for an SD355 but distributors only have SD365 — are they compatible?” The short answer is usually yes, with caveats. Fire-Lite’s replacement paths typically share the same B210LP base, but addressable polling signatures sometimes require a panel firmware update. We map this for you before the part ships.
| Legacy Fire-Lite Part | Direct Replacement | Compatibility Notes |
|---|---|---|
| SD355 | SD365 | Same B210LP base. Verify ES-50X / ES-200X panel firmware revision. |
| SD355T | SD365T | Photo-thermal; backward-compatible at base. Adjust SLC mapping. |
| H355 | H365 | Thermal-only; same base; verify fixed-temp rating per application. |
| MMF-300 | MMF-300 (Rev. C) | PCB revision change; check supervision wiring. |
| CMF-300 | CMF-300-6 | Relay form-factor; double-check mounting depth. |
| MS-9200 | MS-9200UDLS / ES-200X | Database is not portable — reprogramming required. |
| MS-9050UD | ES-50X | New SLC architecture; legacy detectors won’t poll on ES-50X. |
| BG-10LX | BG-12LX | Mounting backbox compatible; addressing scheme changes. |
If your cross-reference isn’t on this list, send us the model number — we maintain an internal database of more than 400 Fire-Lite cross-references and typically respond within one business day.
The Compliance Cost of Not Replacing Discontinued Fire-Lite Parts
Some owners assume that “discontinued” means “we have to replace the panel”. That’s rarely true — and acting on that assumption is one of the most expensive mistakes in commercial fire protection. Here’s what’s actually at stake when a discontinued Fire-Lite device fails an annual inspection:
Fire Watch Costs
When a fire alarm system is impaired, NFPA 72 (Chapter 14) and most local AHJs require a manned fire watch until the system is restored. That typically runs $25-$60 per hour, 24 hours a day. A two-week parts wait can quickly exceed $15,000.
Insurance Exposure
Commercial property policies require a functioning, code-compliant fire alarm system. A documented impairment that drags on can void coverage on a claim — or trigger a sharp premium increase at renewal.
Occupancy Risk
For hospitals, hotels, schools and multifamily, an extended impairment can force partial closures or restrict occupancy. The revenue impact dwarfs the cost of a $200 module.
Avoided Capital Expense
A full panel replacement is often $15,000 to $80,000 depending on building size. A legitimate repair-in-kind using a stocked discontinued part can keep that system running another 5-10 years.
Got Fire-Lite Parts? We Buy New-Old-Stock
One reason we can stock so much discontinued Fire-Lite inventory is our Got Parts program. If you’re decommissioning a building, finishing a retrofit project with leftover stock, or have unused Fire-Lite devices in original packaging, we’d like to make you an offer.
We pay fair market value for:
- New-in-box Fire-Lite SD355 / SD365 detectors, MMF-300 and CMF-300 modules
- Sealed MS-9200, MS-9050 and ES-50X panel boards and CPUs
- Unused BG-10LX / BG-12LX pull stations
- Discontinued models still in their original manufacturer packaging
Industries That Rely on Legacy Fire-Lite Components
Discontinued Fire-Lite inventory isn’t a niche concern — it’s the daily reality of buildings whose life cycles outlast the manufacturer’s product cycle:
- K-12 school districts and university campuses — multi-building installations were standardized on MS-9200 or ES-50X platforms 10-15 years ago; cross-building parity matters.
- Multifamily apartments and condos — common in mid-rise multifamily because of Fire-Lite’s competitive price point. HUD-funded property managers depend on repair-in-kind.
- Mid-size office buildings and Class B commercial — typical Fire-Lite installed base; retrofitting an entire panel is rarely budget-justified.
- Hotels and limited-service hospitality — guest-room detectors on legacy SLCs are the most common Fire-Lite obsolescence pain.
- Healthcare clinics and outpatient facilities — Joint Commission ITM expectations don’t care that your part went EOL three years ago.
Frequently Asked Questions
How do I know if my Fire-Lite part is discontinued?
Fire-Lite (Honeywell) publishes EOL notices through its authorized distributor network. If your local distributor confirms the part is no longer manufactured, or if the model is missing from current Fire-Lite catalogs, it is discontinued. The fastest path is to submit the part number to QuickShipFire — we’ll confirm availability and identify the direct replacement within one business day.
Are obsolete Fire-Lite parts still code-legal to install?
Yes, in most cases. NFPA 72 does not require ripping out a working panel because a model is discontinued. As long as the device is UL/ULC listed and was originally approved for the application, repair-in-kind with the same model is permitted by most AHJs. Confirm with your local Authority Having Jurisdiction before any major replacement and reference our NFPA 72 Compliance Guide for the regulatory background.
Can you cross-reference a discontinued Fire-Lite model to its current production replacement?
Yes. Common replacement paths — SD355 to SD365, H355 to H365, MS-9050UD to ES-50X — are well documented. Submit the part number through our quote form and we’ll return the current SKU plus panel firmware notes you need to know before installation.
Do you guarantee discontinued Fire-Lite parts?
Yes. Every part we ship — new, new-old-stock or refurbished — carries our standard limited warranty. Refurbished devices are bench-tested before they leave the warehouse. Specific terms appear on each product page.
How fast can you ship a discontinued Fire-Lite part?
Most in-stock items ship the same day if your order is placed before noon Eastern Time. Ground transit anywhere in the continental US is typically 2 to 5 business days. Expedited and overnight shipping are available at checkout for urgent jobsite needs.
Do you buy old Fire-Lite stock or new-old-stock inventory?
Yes. If you have new-old-stock Fire-Lite devices or unused inventory from a discontinued project, our Got Parts program will evaluate and make an offer. This is one of the ways we maintain a steady supply of legacy Fire-Lite components.
What’s the difference between refurbished and new-old-stock Fire-Lite parts?
New-old-stock (NOS) is unused inventory in original manufacturer packaging — never installed, never powered on. Refurbished means the unit was previously installed, removed from service, then fully bench-tested and verified to operate within Fire-Lite’s published specifications. Both carry our warranty.
Request a Quote on Discontinued Fire-Lite Parts
Send us the model number — or describe the panel you’re working on — and we’ll respond with availability, pricing and panel-firmware compatibility notes. Most quotes go out the same business day.
Need a Discontinued Fire-Lite Part — Today?
Submit a part number, talk to a real specialist, get a real answer. No phone trees, no upsells, no “we’ll get back to you next week.”
Request a Quote Call +1 (833) 747-7845