MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 5 Pair

Description

Product Overview

The MC-31 NC door contact sensor is engineered to provide precise magnetic reed switching for a variety of door and window applications. Constructed with a durable PVC housing and a high‑sensitivity reed element, the sensor reacts instantly to the presence of a magnetic field, delivering a clean open or closed signal to your control system. The white finish blends seamlessly with most interior environments, while the 5‑pair configuration offers redundancy and flexibility for multi‑point monitoring. Designed for surface mounting, the sensor can be installed on wood, metal, or composite frames without the need for drilling, preserving the integrity of the door or window structure.

Usage

This sensor is ideal for residential security systems, commercial access control, and industrial safety monitoring. It can be employed on entry doors, interior partitions, garage doors, and window frames to detect unauthorized opening or to trigger automatic door‑closer mechanisms. The sensor’s compact size (5.8 x 3.7 x 0.8 inches) and lightweight design (3.99 ounces) make it suitable for tight spaces and retrofit projects. Install the sensor on the frame and align the accompanying magnet on the moving leaf; the magnetic field will keep the reed switch closed when the door is shut and open when the door is opened, providing a reliable status signal for alarm panels, building management systems, or IoT gateways.

Why Choose Us

Choosing the MC-31 sensor means selecting a product backed by rigorous quality control and a reputation for reliability. Manufactured by BNYZWOT, a trusted supplier in the industrial switches market, each unit undergoes comprehensive testing for magnetic sensitivity, contact bounce, and environmental resistance. The sensor meets IEC standards for electromagnetic compatibility and is rated for continuous operation in temperatures ranging from -20°C to +85°C. Our commitment to customer satisfaction includes responsive technical support, a clear warranty policy, and access to detailed installation guides and firmware updates when needed.

Key Features

• High‑sensitivity magnetic reed switch ensures instant detection of door movement.
• White PVC housing provides a clean, unobtrusive appearance for any décor.
• 5‑pair configuration offers redundancy and multi‑point monitoring flexibility.
• Surface‑mount design eliminates the need for drilling, preserving door integrity.
• Comprehensive after‑sales support with technical assistance and warranty coverage.

FAQ

What type of magnet should be used with the MC-31 sensor?

Any neodymium (NdFeB) magnet with a surface field strength of at least 100 gauss will work effectively. The magnet should be mounted on the moving part of the door or window so that it aligns with the sensor when the door is closed.

Can the sensor be used in outdoor environments?

Yes, the sensor is rated for operation up to +85 °C and down to –20 °C, making it suitable for outdoor installations when protected from direct rain or moisture. For harsh weather, consider adding a waterproof enclosure.

Is the sensor compatible with standard alarm panels?

The MC-31 provides a dry contact (normally open) output that is compatible with most conventional alarm panels, PLCs, and building automation controllers. No additional interface circuitry is required.

How many sensors can be connected to a single alarm circuit?

Because the sensor uses a simple reed switch, you can wire multiple sensors in parallel on the same circuit, provided the total load does not exceed the panel’s specifications. This allows for comprehensive coverage of multiple entry points.

What is the expected lifespan of the reed switch?

Reed switches typically have a mechanical life of over 10 million operations, and the MC-31 is designed to meet or exceed this standard, ensuring long‑term reliability even in high‑traffic applications.