The Simplex 4081-9003 is a 4.7 kΩ end-of-line resistor harness for Simplex fire alarm circuits. It installs at the far end of a supervised circuit. As a result, the control panel can monitor that circuit for faults.
How the Simplex 4081-9003 harness works
The harness places the resistor across the end of the circuit. A small supervisory current then flows through it. However, an open or short changes that current. Therefore, the panel reports a trouble or alarm condition.
Specifications and use
The resistance value is 4.7 kΩ. The harness format simplifies connection at the termination point. Specifically, the value must match the circuit’s supervision requirement. Also, confirm the correct end-of-line value for your panel before installation.
For more information, contact the Life Safety Consultants team at 1-888-557-0558, or email us at sales@lifesafetycom.com.
Additional information
| Weight | 0.03 lbs |
|---|---|
| Dimensions | 3 × 4.5 × 0.25 in |
| Condition | New |
| Manufacturers | Simplex |
| Part Type | Replacement Part |







