Simplex 4081-9010
Simplex 4081-9010
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The Simplex 4081-9010 is a 1 kΩ, 1 W end-of-line resistor harness used to supervise Class B wiring on a Simplex fire alarm circuit. Installed at the last device on the circuit run, the resistor lets the fire alarm control panel monitor the loop for wiring faults, signaling trouble if the circuit is opened or shorted.
Key Features
- Pre-wired harness assembly - no separate resistor mounting or splicing required
- Provides Class B end-of-line supervision for Simplex initiating and notification circuits
- Simple in-line installation at the final device on the circuit
Technical Specifications
- Resistance/Rating: 1 kΩ, 1 W
- Overall harness length: approximately 9-1/2 in (241 mm)
- Application: Class B end-of-line resistor for Simplex fire alarm circuits

