The Bosch RFDW-SM RADION Wireless Surface Mount Reed Switch is a high-performance 433MHz magnetic door and window contact designed for Bosch intrusion alarm systems. Featuring an internal magnetic reed switch, dual-side magnet positioning, low-battery supervision, cover and wall tamper detection, and up to 5 years of battery life, this wireless security sensor provides reliable door and window monitoring for residential and commercial security installations across Australia and New Zealand.
Part of the Bosch RADION wireless security range, the RFDW-SM offers convenient surface mounting without requiring a hardwired connection to the alarm control panel. Operating at 433.42MHz, the transmitter communicates with a compatible Bosch RADION wireless receiver to report door or window activity, tamper conditions and low-battery status.
Compatible receiver options include Bosch RFRC-STR2, RF3212E, RFRC-OPT and other supported RADION receivers, depending on system configuration and regional model compatibility.
Main Features
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433.42MHz Wireless Communication: Operates within the Bosch RADION wireless security ecosystem for compatible intrusion alarm systems.
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Built-In Magnetic Reed Switch: Detects door and window opening through magnetic contact separation.
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20mm Magnet Operating Distance: Sends an alarm signal when the magnet moves beyond the specified separation distance.
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Dual-Side Magnet Positioning: Allows the magnet assembly to be installed on either side of the transmitter.
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Cover Tamper Detection: Reports attempts to open or remove the transmitter cover.
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Wall Tamper Detection: Transmits a tamper signal if the device is removed from its mounting surface.
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Low-Battery Supervision: Supports maintenance by notifying the alarm system of low-battery conditions.
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Up to 5-Year Battery Life: Operates using one user-replaceable AAA lithium battery.
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Wireless Surface Mount Installation: Reduces the need for additional wiring between the contact and alarm control panel.
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Compact Transmitter Design: Measures 19.5 x 82.55 x 12.8mm for discreet indoor installation.
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Compatible Bosch RADION Integration: Designed for use with supported Bosch receivers and intrusion alarm control panels.
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Indoor Security Applications: Suitable for monitored doors, windows and other protected indoor openings.
Technical Specifications
| Specification |
Details |
| Brand |
Bosch |
| Product Series |
RADION |
| Product Model |
RADION Contact SM |
| Product Code / SKU |
RFDW-SM |
| Product Type |
Wireless Magnetic Reed Switch |
| Detection Type |
Magnetic Door / Window Contact |
| Installation Type |
Surface Mount |
| Wireless Frequency |
433.42MHz |
| Reed Contact Arrangement |
Internal contacts on both sides |
| Magnet Operating Distance |
20mm |
| Power Supply |
1.5VDC |
| Battery Type |
1 x AAA Lithium Battery |
| Battery Replacement |
User Replaceable |
| Battery Life |
Up to 5 Years |
| Low-Battery Supervision |
Yes |
| Cover Tamper Detection |
Yes |
| Wall / Removal Tamper Detection |
Yes |
| Transmitter Dimensions |
19.5 x 82.55 x 12.8mm |
| Magnet Dimensions |
18.5 x 24.5 x 12.5mm |
| Operating Temperature |
-10°C to +49°C (supplied datasheet) |
| Relative Humidity |
Up to 93%, Non-Condensing |
| Environmental Classification |
EN 50130-5 Class II |
| Intended Installation |
Indoor Use |
| Regional Model |
RFDW-SM – Europe, Africa and Australia |
| Warranty |
Subject to Bosch / Supplier Warranty Terms |
Operating temperature limits and environmental ratings may vary between Bosch documentation revisions. Confirm requirements against the documentation supplied with the unit.
Bosch RADION Receiver Compatibility
The Bosch RFDW-SM is designed to operate with compatible Bosch RADION wireless receivers and supported alarm control panels.
| Receiver Model |
Compatibility Information |
| RFRC-STR2 |
Supported Australian RADION receiver applications |
| RF3212E |
Supported legacy Bosch receiver applications |
| RFRC-OPT |
Specified for RFDW-SM in Bosch documentation |
| B810 |
Regional and model-specific compatibility must be verified |
| RF120 |
Verify support for the exact receiver and panel configuration |
Important: The RFDW-SM requires a compatible wireless receiver and Bosch alarm control panel. It does not operate as a standalone alarm system. Receiver compatibility varies by regional transmitter variant and system configuration.
What's Included in the Box?
Practical Applications
1. Residential Security Alarm Systems
The Bosch RFDW-SM provides wireless monitoring for entrance doors, rear doors and other protected openings in compatible Bosch home alarm systems.
2. Window Intrusion Detection
Install on suitable indoor window frames to monitor the opening of windows as part of a wireless perimeter security system.
3. Commercial Office Security
Suitable for office entrances, meeting rooms and restricted areas requiring door position monitoring through compatible Bosch intrusion alarm systems.
4. Wireless Security System Upgrades
The RFDW-SM provides a practical option for expanding an existing compatible Bosch alarm system without installing additional door contact wiring.
5. Retail and Small Business Protection
Can be used to monitor protected entrances, internal access doors and windows within compatible commercial intrusion detection systems.
6. Retrofit Security Installations
Its wireless surface mount design makes it particularly useful in existing buildings where installing concealed cabling may be difficult or undesirable.
7. Tamper-Supervised Door Monitoring
Built-in cover and wall tamper detection makes the detector suitable for installations where attempts to interfere with the security device must be reported.
Installation Considerations
For optimal operation of the Bosch RFDW-SM, follow the manufacturer's installation instructions.
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Mount the transmitter on the interior door or window frame.
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Install the magnet assembly on the moving portion of the door or window.
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Position the magnet within 20mm of the transmitter's appropriate sensing side when the opening is closed.
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The magnet may be positioned on either side of the transmitter.
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Protect the detector from rain, excessive humidity and weather exposure.
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Be aware that metal mounting surfaces can affect wireless signal propagation.
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Verify receiver communication and complete system testing following installation.
Warranty Information
The Bosch RFDW-SM RADION Wireless Surface Mount Reed Switch is covered by applicable 1 year Bosch and supplier warranty conditions.
About Bosch Security Systems
Bosch Security Systems is an established provider of electronic security and building technology solutions, including intrusion alarm systems, wireless detectors, access control equipment and professional security accessories.
The Bosch RADION wireless portfolio is designed to deliver flexible installation, supervised wireless communication and extended battery operation for compatible professional intrusion alarm systems.
Excellence for the Australian and New Zealand Market
The Bosch RFDW-SM RADION Wireless Surface Mount Reed Switch offers a professional wireless door and window monitoring solution for compatible security systems in Australia and New Zealand.
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Australian Market Application: The RFDW-SM is identified in Bosch documentation as a regional model intended for use in Australia, Europe and Africa.
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Professional Security Integration: Suitable for supported Bosch intrusion alarm systems used in residential and commercial properties.
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433MHz RADION Wireless Technology: Designed to communicate with compatible Bosch wireless receivers, subject to system and regional compatibility.
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Quality and Certifications: Bosch documentation identifies relevant certifications and standards, including EN 50131-series requirements and EN 50130-5 environmental classifications. Certifications vary by regional model and product revision.
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Australian and New Zealand Compliance: Radio equipment installation and use must comply with applicable local requirements. Specific Australian RCM and New Zealand compliance status should be confirmed for the supplied variant.
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Authentic Bosch Product Sourcing: Purchasing through authorised Bosch representatives and distributors is recommended to ensure genuine equipment and appropriate product support.
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Manufacturer Warranty Support: Warranty enquiries may be coordinated with Bosch or its authorised representatives through the supplying retailer, subject to applicable warranty conditions.
Frequently Asked Questions (FAQs)
1. What is the Bosch RFDW-SM RADION Wireless Surface Mount Reed Switch used for?
The Bosch RFDW-SM is a wireless magnetic door and window contact designed to detect opening events in compatible Bosch intrusion alarm systems. It transmits signals to a supported RADION receiver connected to an alarm control panel.
2. What wireless frequency does the Bosch RFDW-SM use?
The Bosch RFDW-SM operates at 433.42MHz using Bosch RADION wireless technology.
3. What is the operating gap of the Bosch RFDW-SM reed switch?
The Bosch RFDW-SM uses a magnetic operating distance of 20mm. When the magnet moves beyond this distance from the internal reed contact, the detector sends an alarm signal to the receiver.
4. Is the Bosch RFDW-SM compatible with the RFRC-STR2 receiver?
The Bosch RFDW-SM is supported in compatible RADION installations using the RFRC-STR2 receiver. The complete receiver and alarm panel configuration should be verified before installation.
5. Can the Bosch RFDW-SM work with a Bosch B810 receiver?
The Bosch RFDW-SM family includes regional variants with different receiver compatibility requirements. Bosch documentation identifies the RFDW-SM-A for B810 applications, so compatibility of the standard RFDW-SM with a specific B810 system should be verified.
6. Is the Bosch RFDW-SM compatible with the RF3212E receiver?
The Bosch RFDW-SM is listed for compatible Australian Bosch RADION applications using RF3212E receivers. System compatibility should be confirmed against the installed control panel and receiver configuration.
7. How long does the Bosch RFDW-SM battery last?
The Bosch RFDW-SM offers up to 5 years of operation using a single AAA lithium battery. Actual battery life depends on environmental conditions, usage and wireless communication activity.
8. Can the battery in the Bosch RFDW-SM be replaced?
Yes. The Bosch RFDW-SM uses a user-replaceable 1.5V AAA lithium battery. Bosch documentation specifies the Energizer L92 as a suitable replacement.
9. Does the Bosch RFDW-SM have tamper protection?
Yes. The Bosch RFDW-SM includes cover and wall tamper switches that transmit a tamper signal if someone removes the cover or detaches the device from its mounting surface.
10. Can the Bosch RFDW-SM be installed outdoors?
No. The Bosch RFDW-SM is intended for indoor use and should be protected from rain, excessive moisture and extreme environmental conditions.
11. Can the Bosch RFDW-SM be installed on metal doors or frames?
Metal mounting surfaces can affect the wireless signal propagation of the Bosch RFDW-SM. Installers should assess mounting suitability, verify radio signal quality and test operation before commissioning the system.
12. What are the dimensions of the Bosch RFDW-SM transmitter?
The Bosch RFDW-SM transmitter measures 19.5 x 82.55 x 12.8mm, while the magnet assembly measures 18.5 x 24.5 x 12.5mm.
13. Does the Bosch RFDW-SM require wiring to the alarm panel?
No direct wiring is required between the Bosch RFDW-SM transmitter and the alarm panel. It communicates wirelessly through a compatible RADION receiver, which must be correctly connected and configured with the alarm control panel.
14. Can the Bosch RFDW-SM be installed on either side of a door frame?
Yes. The Bosch RFDW-SM contains reed sensing contacts on both sides, allowing the magnet assembly to be mounted on either side of the transmitter within the specified operating distance.
15. Is the Bosch RFDW-SM suitable for Australian security alarm installations?
Yes. Bosch identifies the RFDW-SM as a variant intended for Australia, Europe and Africa. Installers should confirm the receiver, control panel and applicable local radio compliance requirements.
16. Does the Bosch RFDW-SM provide low-battery warnings?
Yes. The Bosch RFDW-SM supports low-battery supervision, allowing compatible security systems to report a low-battery condition.
17. What is included with the Bosch RFDW-SM wireless magnetic door contact?
The Bosch RFDW-SM includes one wireless detector, one magnet assembly, one AAA lithium battery, an installation hardware pack and an installation guide.
18. Why choose the Bosch RFDW-SM RADION wireless magnetic door contact?
The Bosch RFDW-SM combines 433.42MHz wireless communication, magnetic door and window monitoring, dual-side magnet positioning, supervised tamper detection and up to 5-year battery life, making it a practical solution for compatible Bosch intrusion alarm installations.
