Siemens DFM Fiber-Optic Interface Module
The Siemens DFM (part number 500-634910) is a fiber-optic interface module for Siemens fire alarm control panels. The DFM enables fire alarm system communication over fiber-optic cable, making it the preferred solution for long-distance runs, electrically noisy industrial environments, or installations where copper wiring is impractical or prohibited.
The DFM supports either Class B (Style 4) or Class A (Style 7) wiring configurations, providing design flexibility for a wide range of installation requirements. It uses 62.5/125 μm multimode fiber and supports cable runs up to 6,562 ft (2 km), well-suited for large campuses, high-rise buildings, and multi-building complexes.
Key features of the DFM include:
- Fiber-optic communication for Siemens fire alarm panels
- Class B (Style 4) or Class A (Style 7) wiring support
- 62.5/125 μm multimode fiber
- Maximum cable distance: 6,562 ft (2 km)
- Ideal for long runs and electrically noisy environments
- Dimensions: 2 x 2 x 0.5 in; Weight: 0.1 lbs
Life Safety Consultants carries the Siemens DFM for prompt shipment. Contact us at (888) 557-0558 or sales@lifesafetycom.com.
Additional information
| Weight | .1 lbs |
|---|---|
| Dimensions | 2 × 2 × .5 in |
| Condition | In Stock, New |
| Compatible Panels | MXL, FireFinder, Sinteso |
| Cross Reference | 500-634910 |
| Fiber-optic interface; Class B Style 4 / Class A Style 7; 62.5/125 um MMF; max 2 km / 6562 ft; Dims | 2x2x0.5 in, Wt: 0.1 lbs |






