Hxchen MC-33C Normally Closed Recessed Window Door Sensor – 5 Pack

Description

Product Overview

The Hxchen MC-33C is a high‑quality, normally closed magnetic reed switch designed for reliable door and window monitoring in a wide range of security applications. Engineered with a compact form factor measuring 2.36 x 1.89 x 0.55 inches and weighing just 0.04 ounces, this sensor can be discreetly recessed into metal doors, frames, or window panels without compromising aesthetic appeal. The MC‑33C model features a robust stainless‑steel reed element that reacts instantly to magnetic field changes, delivering a clear open‑circuit signal when the magnet separates and a closed circuit when the magnet is aligned. This simple yet effective mechanism makes it an ideal choice for anti‑theft alarm systems, fire detection circuits, and automated building management solutions.

Each package includes five identical sensor units, providing ample coverage for multiple entry points or allowing for future expansion of your security network. The sensors are supplied with small screw terminals that accept standard 22‑24 gauge wire, enabling quick and secure connections without the need for specialized tools. The terminal block style connection also supports a variety of wiring configurations, including series and parallel arrangements, giving installers flexibility to match the specific requirements of their control panels or alarm circuits. The MC‑33C is rated for a wide operating temperature range and is resistant to dust and moisture, ensuring long‑term durability in both indoor and outdoor environments.

Usage

Designed with versatility in mind, the MC‑33C sensor excels in a multitude of real‑world scenarios. In residential settings, homeowners can install the sensors on entry doors, garage doors, and basement windows to create a layered defense against unauthorized entry. When integrated with a standard home security panel, the normally closed configuration ensures that any disruption of the magnetic field—such as a door being opened—triggers an immediate alarm condition, alerting occupants and, if configured, notifying monitoring services.

Commercial and industrial users benefit from the sensor’s ability to monitor larger, metal‑reinforced doors commonly found in warehouses, loading docks, and secure facilities. The sensor’s compact size allows it to be mounted behind panels or within recessed housings, preserving the clean lines of industrial equipment while providing continuous status feedback to supervisory control and data acquisition (SCADA) systems. Additionally, the MC‑33C can be incorporated into fire safety circuits, where the loss of a closed circuit can signal a door being held open, potentially compromising fire containment strategies.

Installation is straightforward: the sensor is positioned on the door frame, while the corresponding magnet is affixed to the moving door leaf. When the door closes, the magnet aligns with the reed switch, completing the circuit. The screw terminals accept pre‑stripped wire, and a simple twist‑lock mechanism secures the connection. This design eliminates the need for soldering, reducing installation time and minimizing the risk of wiring errors. The sensor’s low power consumption makes it compatible with battery‑powered alarm panels, extending the operational life of the entire system.

Why Choose Us

Choosing the Hxchen MC‑33C means selecting a product backed by a commitment to quality, reliability, and customer satisfaction. Hxchen has a proven track record in manufacturing industrial‑grade components, and each MC‑33C sensor undergoes rigorous testing to meet or exceed industry standards for performance and durability. The sensors are manufactured using precision‑molded housings that protect the internal reed element from mechanical shock and environmental contaminants, ensuring consistent operation over years of service.

Our after‑sales support includes a 90‑day money‑back guarantee, providing peace of mind for customers who demand confidence in their purchase. Should any issue arise, our technical support team is readily available to assist with troubleshooting, wiring guidance, or replacement parts. We also offer comprehensive documentation, including wiring diagrams, installation videos, and best‑practice guides, empowering both professional installers and DIY enthusiasts to achieve optimal results.

In addition to the core product benefits, the MC‑33C’s packaging of five sensors per set delivers cost‑effective value for projects that require multiple points of coverage. By purchasing a single 5‑pack, customers reduce per‑unit costs and simplify inventory management, especially for large‑scale deployments across multiple facilities. The sensors are also compatible with a wide range of third‑party alarm panels and control systems, thanks to their standard NC (normally closed) output, making integration seamless and hassle‑free.

Key Features

• Five‑pack provides ample coverage for multiple doors or windows, reducing overall project cost.
• Normally closed design ensures immediate alarm activation when the magnet separates, enhancing security.
• Compact recessed form factor fits discreetly into metal frames without compromising appearance.
• Screw terminal connections simplify wiring and allow flexible installation configurations.
• 90‑day money‑back guarantee and responsive customer support for reliable after‑sales service.

FAQ

What does “normally closed” mean for this sensor?

In a normally closed (NC) configuration, the reed switch maintains a closed electrical circuit when the magnet is aligned with the sensor. This means the circuit is conductive and the alarm panel sees a steady signal. When the door or window opens and the magnet moves away, the circuit opens, causing the alarm to trigger. This behavior is ideal for security applications because any interruption—whether caused by a forced entry or an accidental opening—immediately alerts the system.

Can the MC‑33C be used with battery‑powered alarm panels?

Yes, the MC‑33C’s low power consumption makes it compatible with battery‑operated alarm panels and other low‑voltage control units. The sensor draws minimal current while in the closed state, preserving battery life and ensuring reliable operation for extended periods. When the circuit opens, the current draw remains negligible, further extending the battery’s service life.

Is the sensor suitable for outdoor installation?

The MC‑33C is designed to withstand typical indoor environmental conditions, including temperature variations and moderate humidity. While it is not specifically rated for harsh outdoor exposure, it can be used in sheltered outdoor locations such as covered porches or garage doors where it is protected from direct rain and extreme weather. For fully exposed outdoor applications, additional protective enclosures are recommended to maintain long‑term reliability.

How do I install the sensor and magnet correctly?

Begin by selecting a location on the door frame where the sensor can be securely mounted using the provided screws. Align the corresponding magnet on the moving part of the door so that when the door is closed, the magnet sits directly opposite the sensor. Use a level to ensure proper alignment, then tighten the screws. Connect the sensor leads to your alarm panel using the screw terminals, making sure to follow the panel’s wiring diagram for NC inputs. After wiring, test the sensor by opening and closing the door to verify that the alarm panel registers the change in state.

What warranty and support does Hxchen offer?

Hxchen provides a 90‑day money‑back guarantee on the MC‑33C, allowing customers to return the product for a full refund if it does not meet expectations. In addition, the company offers a responsive technical support team that can assist with installation questions, troubleshooting, and replacement parts. Documentation, including detailed wiring schematics and installation videos, is available on the Hxchen website to help users achieve a successful deployment.