The Simplex 4081-9002 End of Line (EOL) resistor is a critical component designed for precision fire alarm circuit termination in commercial and institutional detection systems. Engineered to provide reliable electrical supervision and circuit monitoring, this 3.3K ohm, 1-watt precision resistor ensures comprehensive fire alarm panel functionality across complex addressable and conventional detection networks.
Strategically deployed at the terminal end of fire alarm circuits, this EOL resistor plays a crucial role in enabling continuous circuit supervision and fault detection. Fire alarm control panels utilize these resistors to monitor circuit integrity, detecting potential open or short circuit conditions that could compromise system reliability. The 3.3K resistance value represents a standard configuration compatible with numerous Simplex fire alarm control panel architectures and detection circuit designs.
Key Features
- Precision 3.3K ohm resistance value for comprehensive circuit monitoring
- 1-watt power rating suitable for standard fire alarm circuit requirements
- Compatible with conventional and addressable Simplex fire alarm control panels
- Manufactured to strict electrical and safety specifications
- Supports NFPA 72 National Fire Alarm and Signaling Code requirements
- Optimal performance in commercial, institutional, and industrial fire detection environments
Specifications
- Resistance: 3.3 kilohms (± 1% tolerance)
- Power Rating: 1 watt
- Operating Temperature Range: -40°F to 185°F
- Material: High-temperature, flame-retardant construction
Typical installation contexts include commercial office complexes, educational facilities, healthcare campuses, manufacturing environments, and high-rise buildings utilizing Simplex fire alarm infrastructure. This EOL resistor integrates seamlessly with addressable and conventional notification appliance circuits, providing reliable electrical supervision for smoke detectors, manual pull stations, and initiating device circuits.
Engineered for compliance with critical safety standards including NFPA 72, UL 268, and UL 464, the Simplex 4081-9002 EOL resistor represents a professional-grade solution for maintaining comprehensive fire alarm system integrity and performance.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.1 lbs |
|---|---|
| Dimensions | 4.5 × 3.2 × 0.1 in |
| Condition | New |
| Manufacturers | Simplex |
| Part Type | Replacement Part |






