Description
Simplex 733-804 End Of Line Resistor
The Simplex 733-804 End Of Line Resistor plays a vital role in maintaining the integrity and performance of a fire alarm circuit. Designed for use with Simplex fire alarm systems, this component ensures correct supervision of initiating device circuits (IDCs), helping installers meet NFPA and manufacturer standards.
Purpose and Functionality
This resistor is placed at the end of a Class B initiating circuit to simulate the electrical load of a properly terminated line. Without it, the control panel may interpret the open line as a fault condition, triggering unwanted alerts. The Simplex 733-804 End Of Line Resistor helps prevent this issue by maintaining a constant resistance, allowing the panel to monitor the circuit accurately.
Seamless Compatibility
Manufactured to meet the exact specifications of Simplex fire alarm systems, this resistor integrates effortlessly into multiple control panel models. Whether you’re finalizing an installation or troubleshooting a supervisory issue, this component provides a dependable solution. It’s a small but crucial part that ensures the overall system operates within the designed parameters.
Easy Installation
Thanks to its compact size and labeled resistance value, the Simplex 733-804 End Of Line Resistor can be installed quickly and without confusion. Technicians can mount it inside an electrical box or directly at the terminal of the last device in the circuit. This flexibility simplifies field work and helps maintain neat wiring practices.
Durable and Reliable
Built with high-quality materials, this resistor resists heat and corrosion, even in demanding environments. As a result, it delivers long-term reliability, essential for maintaining the supervision loop of any commercial fire alarm system.
The Simplex 733-804 End Of Line Resistor is a critical component for completing and supervising fire alarm circuits. Its compatibility, ease of use, and dependable performance make it a must-have for any Simplex-based installation or upgrade.




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