Description
Siemens FDM225-RP Addressable Manual Fire Alarm Call Point
Product Dimensions:
The Siemens FDM225-RP is a manual call point (also known as a “break glass” unit) designed for the Sinteso and Cerberus PRO fire detection systems. It is used to manually trigger a fire alarm in the event of an emergency. The “RP” suffix stands for Resettable Plastic, meaning the unit can be reset after activation without replacing the glass.
Product Detailed Description
The FDM225-RP is an addressable device that communicates directly with the fire control panel via the FDnet/C-NET loop. Unlike traditional break-glass units, it features a flexible plastic element that mimics the feel of breaking glass but allows for easy resetting using a special key. It includes an integrated line separator to ensure the rest of the loop remains functional if a short circuit occurs.
Technical Parameters
| Parameter | Specification |
| Model Number | FDM225-RP |
| Operating Voltage | 12 V DC to 33 V DC |
| Operating Current | ~0.6 mA (Quiescent) |
| Communication Protocol | FDnet (Sinteso) / C-NET (Cerberus PRO) |
| Protection Category | IP44 (Standard) / IP64 (with optional seal) |
| Operating Temp | -10°C to +55°C |
| Storage Temp | -30°C to +75°C |
| Dimensions | 87 x 87 x 47 mm |
| Color | Red (RAL 3000) |
| Standard Compliance | EN 54-11, EN 54-17 |
Product Advantages
- Resettable Element: Eliminates the cost and safety hazards of broken glass. Once triggered, the unit is reset with a key, making it ideal for areas prone to accidental activation.
- Integrated Line Separator: Enhances system reliability; if the loop is damaged, the module isolates the fault to keep other devices online.
- Automatic Addressing: The device is automatically identified and addressed by the control panel during commissioning, saving significant installation time.
- Clear Status Indication: Features a high-visibility LED that flashes during normal operation and stays lit during an alarm state.
- Flexible Mounting: Can be surface-mounted or flush-mounted depending on the backbox used.
Important Considerations (Precautions)
- Environmental Protection: While the standard unit is IP44, if you are installing it in a wash-down area or outdoors, you must use the optional weatherproofing seal and a specialized housing to reach IP64.
- Testing: Only use the official Siemens test key to reset the unit. Using screwdrivers or other tools may damage the internal plastic mechanism.
- Loop Capacity: Ensure the total number of devices on the FDnet/C-NET loop does not exceed the power limitations of the specific control panel (typically 126 or 252 devices).
Product Applications
The FDM225-RP is the standard manual trigger for modern fire safety systems in:
- Commercial Buildings: Offices, shopping malls, and hotels where aesthetic design and ease of maintenance are important.
- Educational Facilities: Schools and universities where “false alarms” or accidental presses are common (the resettable plastic is much safer than glass in these environments).
- Industrial Plants: Used in control rooms or along escape routes to provide manual override for automatic detection systems.
- Hospitals: Where a high degree of system reliability and fast reset capability are required.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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