The Simplex 4100ES is the most widely installed fire alarm control panel in the Simplex product line. Found in hospitals, universities, government buildings, and large commercial facilities across the country, the 4100ES is known for its reliability and longevity — and that means facilities teams and fire alarm contractors regularly need Simplex 4100ES replacement parts. This guide covers the compatible devices, modules, and accessories for the 4100ES platform.
About the Simplex 4100ES Platform
The Simplex 4100ES (Enhanced System) is a modular, addressable fire alarm control panel supporting up to 2,500 points per panel. Key platform features include:
- Supports Simplex TrueAlarm addressable detector and module devices
- Modular card-cage architecture — individual cards can be replaced without replacing the entire panel
- Supports Class A and Class B SLC wiring configurations
- Network-capable for large multi-building campus deployments
- Compatible with 4100ES-specific software programming and configuration tools
The 4100ES has been in production and service for many years, which means a wide variety of firmware versions and hardware revisions exist in the field. Always verify panel revision and firmware version when ordering replacement cards or modules.
Compatible TrueAlarm Detectors
The 4100ES uses Simplex’s TrueAlarm intelligent detector series. These are addressable detectors that communicate on the SLC loop using Simplex’s proprietary protocol. The most common detector replacements include:
- Simplex 4098-9714 TrueAlarm Photoelectric Sensor: The standard photoelectric smoke sensor for TrueAlarm duct and area detector bases. A high-demand replacement part for both area detectors and duct detector housings.
- 4098-9716 (Heat Sensor): TrueAlarm heat detection sensor, rated at 135°F fixed temperature and 15°F/min rate-of-rise.
- 4098-9718 (Multi-Criteria Sensor): Combines photoelectric and thermal sensing for reduced false alarm rates in challenging environments such as kitchens and mechanical spaces.
TrueAlarm sensors plug into detector bases — the sensors and bases are separate components. When ordering replacement sensors, confirm the base type currently installed.
Modules: 4090-9001 IAM and Beyond
The 4100ES uses addressable modules to interface with conventional and auxiliary devices. Key module types include:
- 4090-9001 IAM (Intelligent Addressable Module): The workhorse input module for the 4100ES platform. Used to monitor conventional initiating devices, waterflow switches, supervisory devices, and other dry-contact inputs. One of the most frequently replaced modules on 4100ES systems.
- 4090-9002 (Dual Input Module): Provides two independent supervised inputs on a single address point.
- 4090-9005 (Output Control Module): Provides a supervised relay output for HVAC control, door holder release, and auxiliary functions.
- 4090-9010 (Combination Module): Input and output functionality in a single module, useful for applications requiring both monitoring and control at the same field location.
Notification Appliances: 4906 Series
The 4100ES drives Notification Appliance Circuits (NACs) that power horns, strobes, and horn/strobe combination units. The 4906 series is Simplex’s line of notification appliances compatible with the 4100ES:
- 4906-9101: Wall-mount horn/strobe, standard candela output
- 4906-9219: Wall-mount strobe only (for areas where audible appliances are not required)
- 4906-9127: High-candela strobe for large open spaces
When replacing notification appliances, verify the candela rating meets the requirements of the space per NFPA 72 Table values for the room dimensions involved.
Pull Stations
The 4100ES supports addressable and conventional pull stations. The Simplex pull station line includes single-action and dual-action models. Replacement pull stations must match the existing model type for address programming compatibility on addressable loops.
Batteries
The 4100ES uses sealed lead-acid batteries for secondary power. The most common replacement is the Simplex 2081-9272, a 12V 7Ah battery approved for 4100ES applications. Larger 4100ES installations may require 12V 12Ah or higher capacity batteries — consult the panel’s battery calculation documentation for your specific system load.
Replace batteries on a 3–5 year cycle per NFPA 72 requirements, or immediately upon any failed battery test.
Where to Order Simplex 4100ES Parts
Life Safety Consultants stocks a comprehensive inventory of Simplex 4100ES compatible parts including TrueAlarm sensors, IAM modules, notification appliances, pull stations, and batteries. Browse our Simplex parts catalog for current availability, or contact us with your specific part numbers for a quote.
Summary
The Simplex 4100ES is a long-lived, modular platform with broad parts availability. Key replacement items include TrueAlarm photoelectric sensors (4098-9714), the 4090-9001 IAM input module, 4906 series notification appliances, addressable pull stations, and 12V 7Ah batteries (2081-9272). For all your 4100ES parts needs, Life Safety Consultants is your go-to supplier.
