Fire-Lite ES-200X & ES-50X: Parts, Modules & Upgrade Guide
The detectors, modules, and parts most often needed for Fire-Lite ES-50X and ES-200X addressable panels - plus what to know when upgrading from a legacy MS-series panel.
Fire-Lite's Emergency Series (ES) addressable panels - the ES-50X, ES-200X, and larger ES-1000X - are among the most popular choices for small and mid-size commercial buildings. They are widely installed, which means parts and modules for them are in constant demand. This guide covers the devices you are most likely to need, plus what to know if you are upgrading from an older Fire-Lite MS-series panel.
What the ES Series Is
Fire-Lite (a Honeywell brand) built the ES line as the modern replacement for its long-running MS series. The ES-50X handles smaller sites, the ES-200X covers mid-size buildings, and the ES-1000X serves larger installations. All are intelligent addressable panels: each device sits on the SLC loop with its own address, and many ES panels include an onboard communicator. Match any replacement device to the Fire-Lite SLC protocol and your panel's approved device list.
Detectors and Bases
The most-replaced field devices on ES panels are the 365 series intelligent detectors:
- SD365 - photoelectric smoke detector
- SD365T - photoelectric with a fixed thermal element
- SD365R - photoelectric with remote-test support
- SD365CO - smoke plus carbon monoxide
- H365 - heat detector (fixed and rate-of-rise variants)
Detectors seat on a matching base such as the B210LP low-profile base or a sounder/relay base. Heads and bases are separate part numbers. Browse smoke detectors, heat detectors, and bases.
Modules
Modules bring conventional circuits and auxiliary functions onto the addressable loop:
- MMF-300 - addressable monitor module
- MDF-300 - dual monitor module
- MMF-301 - miniature monitor module
- CRF-300 - addressable relay module
- CMF-300 - addressable control module
See the range in relay and monitor modules.
Annunciators and Communicators
Remote annunciators let staff view and control the system away from the panel. The ANN-80 LCD annunciator is the most common, alongside LED and relay annunciator options. For off-site reporting, ES panels support onboard and cellular communicators. Browse annunciators.
Pull Stations, Power, and Enclosures
The addressable BG-12LX is the standard manual pull station for ES panels - see pull stations. As notification loads grow, you may need additional NAC power supplies and correctly sized sealed lead-acid batteries, plus cabinets and battery backboxes. Browse power supplies and cabinets.
Upgrading from a Legacy MS-Series Panel
Many buildings still run older Fire-Lite MS-9050UD, MS-9200UDLS, or MS-9600LS panels. The ES series is the natural upgrade path. A few things to know:
- Many 365-series detectors and 300-series modules are shared across recent Fire-Lite platforms, which can simplify a phased upgrade.
- Always confirm device and wiring compatibility against the new panel's documentation before reusing field devices.
- Upgrading is often triggered when legacy panel parts become hard to source - sorting that out ahead of time lets you plan on your own schedule.
How to Confirm You Are Ordering the Right Part
- Read the exact model off the device and photograph the label.
- Confirm it is a Fire-Lite SLC device and on your panel's approved device list.
- Order the base separately when replacing a detector head.
- Check firmware if you are adding newer devices to an older ES panel.
Frequently Asked Questions
What is the difference between the ES-50X and ES-200X?
Mainly capacity - the ES-50X suits smaller sites and the ES-200X covers more points for mid-size buildings. Many of the same detectors and modules work across both.
Can I reuse my old MS-series detectors on an ES panel?
Sometimes, but not always. Confirm compatibility against the ES panel's approved device list before reusing any field device.
Do ES panels have a built-in communicator?
Many ES models include an onboard communicator, with cellular options available for off-site reporting. Confirm what your specific panel includes.
Need a Fire-Lite ES Part?
We stock and source Fire-Lite ES-50X, ES-200X, and ES-1000X devices and modules, plus legacy MS-series parts. Start with our Fire-Lite replacement parts, browse the full Fire-Lite catalog, or contact us with your model number.