Description
Product Overview
The Manesi RC-33 magnetic door switch is engineered as a recessed, normally‑closed sensor that delivers dependable security monitoring for both residential and industrial environments. Constructed from high‑impact ABS plastic, the housing protects the internal reed switch and magnet assembly from dust, moisture, and mechanical stress, extending the product’s lifespan even in demanding conditions. The device operates on a maximum voltage of 110 V and a current rating of 0.5 A, providing a contact power of up to 10 W, which makes it compatible with a wide range of alarm panels, home automation hubs, and PLC systems. Its compact dimensions—5.63 × 3.74 × 0.91 inches—allow seamless integration into door frames, window sashes, and other tight spaces without compromising aesthetic appeal. The sensor’s actuation distance of 15 to 25 mm ensures reliable detection of door or window movement, while the normally‑closed (NC) configuration means the circuit remains closed (light on) when the magnet is aligned, and opens (light off) when the door is opened, providing clear status feedback for security systems.
![[Product front view showing all components]](https://www.nutritionplan.store/wp-content/uploads/2026/07/b4a1cb2837724d0f8f8d970cadcb8fb2.jpg)
Usage
Designed for versatility, the RC‑33 magnetic door switch can be employed in a multitude of scenarios. In residential settings, it serves as a core component of burglar alarm systems, monitoring entry points such as front doors, back doors, and sliding windows. Its recessed design ensures the sensor remains unobtrusive, preserving the visual integrity of the home while delivering reliable detection. For commercial and industrial applications, the switch is ideal for monitoring access to restricted areas, equipment enclosures, and safety interlocks on machinery. The robust ABS housing tolerates temperature fluctuations and exposure to chemicals, making it suitable for factories, warehouses, and outdoor installations where environmental conditions can be harsh. Installation is straightforward: the sensor is mounted onto the frame, and the accompanying magnet is positioned on the moving part. The 10‑piece package provides ample units for multi‑point coverage, allowing users to secure several doors or windows with a single purchase. Compatibility with standard 24 V DC alarm panels and modern smart home hubs ensures seamless integration into existing security infrastructures.
Why Choose Us
Choosing the Manesi RC‑33 magnetic door switch means selecting a product backed by rigorous quality assurance processes and a commitment to customer satisfaction. Manesi, a recognized manufacturer in the industrial electrical sector, adheres to ISO‑9001 standards, guaranteeing that each unit undergoes comprehensive testing for durability, electrical performance, and environmental resistance before leaving the factory. The ABS housing is sourced from certified suppliers, ensuring consistent material quality that resists cracking and deformation under stress. Additionally, the reed switch and magnet are calibrated to maintain precise alignment over thousands of cycles, reducing the likelihood of false alarms or missed detections. Our after‑sales support includes technical assistance, detailed installation guides, and a responsive warranty service that addresses any issues promptly. By offering a 10‑set package, we provide cost‑effective coverage for larger projects, eliminating the need for multiple individual purchases and simplifying inventory management. Customers benefit from a product that not only meets industry specifications but also exceeds expectations in reliability, ease of installation, and long‑term performance.
Key Features
- Durable ABS housing protects the sensor from dust, moisture, and impact, ensuring long‑term reliability in harsh environments.
- Normally‑closed design provides clear status indication, keeping the circuit closed when the magnet aligns and opening when the door opens.
- Actuation distance of 15‑25 mm offers flexible installation options for various door and window sizes.
- Low power consumption with a maximum current of 0.5 A and contact power of 10 W, compatible with most alarm and automation systems.
- Comprehensive customer support and warranty service give peace of mind and quick resolution for any technical concerns.
FAQ
What is the difference between normally closed (NC) and normally open (NO) configurations?
In a normally closed (NC) configuration, the circuit remains closed when the magnet and sensor are aligned, meaning the alarm or monitoring system receives a continuous signal indicating the door is closed. When the door opens and the magnet separates, the circuit opens, triggering an alert. This is useful for detecting unauthorized entry. In contrast, a normally open (NO) sensor stays open when the magnet is aligned and closes when the door opens, which is less common for security applications but may be used for specific control logic.
Can the RC‑33 sensor be used with a 24 V DC alarm panel?
Yes, the RC‑33 is compatible with both AC and DC power sources up to 110 V. When connected to a 24 V DC alarm panel, the sensor operates within its specified current range of 0.5 A, providing reliable contact closure without overloading the panel. Ensure that the wiring follows the manufacturer’s polarity guidelines and that the panel’s input specifications match the sensor’s contact rating.
How should the sensor be mounted for optimal performance?
For optimal performance, mount the sensor on a stable part of the door or window frame using the provided screws or adhesive pads. Position the accompanying magnet on the moving part so that the gap between them falls within the 15‑25 mm actuation range when the door is closed. Verify that the sensor surface is clean and free of debris before installation. After mounting, test the alignment by opening and closing the door to ensure the circuit transitions correctly between closed and open states.
Is the sensor suitable for outdoor installations?
The ABS housing provides a degree of protection against moisture and temperature variations, making the RC‑33 suitable for outdoor use in sheltered locations such as covered porches, garage doors, and window frames. However, for exposure to direct rain or extreme weather, additional sealing measures like weather‑proof enclosures or silicone gaskets are recommended to enhance longevity and maintain reliable operation.
What warranty and support options are available?
Manesi offers a one‑year limited warranty covering manufacturing defects and material failures. Customers can contact our technical support team via email or phone for installation assistance, troubleshooting, and replacement parts. Detailed documentation, including wiring diagrams and installation videos, is available on our website to help users achieve a successful setup quickly.




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