The Resideo 4959SN Serial # MPX Overhead Contact is a critical component for addressable fire alarm systems designed to provide comprehensive detection and monitoring capabilities in commercial and institutional environments. This precision-engineered detector contact interfaces directly with multiplex communication circuits, enabling sophisticated environmental monitoring for overhead spaces, mechanical rooms, and critical infrastructure zones.
Engineered for seamless integration with Resideo addressable fire alarm panels, the 4959SN delivers robust supervision and detection capabilities across complex facility layouts. Its sophisticated design allows for precise zone identification and rapid signal transmission, ensuring comprehensive life safety coverage in challenging architectural configurations such as data centers, healthcare facilities, educational campuses, and industrial complexes.
Key Features
- Compatible with Resideo multiplex addressable communication protocols
- Low-impedance solid-state switching mechanism for reliable signal transmission
- Wide operating temperature range (-20°F to 150°F) for diverse environmental conditions
- Compact form factor facilitating streamlined installation in constrained overhead spaces
- UL Listed and compliant with NFPA 72 fire alarm system requirements
- Supervised circuit design providing continuous monitoring and fault detection
Specifications
- Operating Voltage: 24VDC nominal
- Maximum Current Draw: 50mA
- Contact Configuration: Normally Open (NO)
- Operating Humidity: 10-95% non-condensing
- Dimensions: Compact design, approximately 2″ x 1″ x 0.5″
Professional fire alarm technicians and system integrators will appreciate the 4959SN’s reliability in critical detection scenarios. Its robust design supports seamless integration with existing Resideo panels and peripheral detection systems, making it an essential component for maintaining comprehensive life safety infrastructure.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.55 lbs |
|---|---|
| Dimensions | 8.5 × 6 × 2 in |
| Condition | New |
| Manufacturers | Resideo |
| Part Type | Replacement Part |






