QWORK

QWORK MC-31 NC Wired Magnetic Door Window Contact Sensor, 20 Pack with 80 Screws, Surface-Mount White Plastic Alarm Reed Switch for Doors Windows Cabinets

Name: QWORK MC-31 NC Wired Magnetic Door Window Contact Sensor, 20 Pack with 80 Screws, Surface-Mount White Plastic Alarm Reed Switch for Doors Windows Cabinets
Brand: QWORK
SKU: SPH-B0CC9DXTVB
Price: 34.94 USD
Availability: InStock

$34.94 USD

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Product Details

About This

NC MAGNETIC CONTACT SENSOR: Surface-mounted wired magnetic door/window contact sensor (MC-31, NC). Magnet close = circuit conductive; magnet separated = circuit disconnected—ideal for wiring into security alarm loops.
8MM ACTUATION GAP: Designed for an actuation distance of 8mm ±18mm to help maintain reliable open/close detection during everyday door and window movement; suited for common home security system wiring.
SURFACE-MOUNT FOR QUICK RETROFIT: Screw-on design for fast installs on doors, windows, cabinet doors, and storage rooms—use for perimeter monitoring where recessed/drilled contacts aren’t convenient.
MATCHED HOUSING & HARDWARE: White plastic housings blend with frames; mounting hole diameter 5.8mm. Set includes 20 sensor/magnet pairs plus 80 screws to equip multiple openings in one project.
INSTALLATION NOTES: Keep the sensor and magnet aligned and on the same plane; verify the gap stays within the actuation range across the full swing. Package includes 20 sets (64×12×12mm & 64×20×12mm) and screws.

Overview

Operation Mode : automatic
Contact Type : Normally Closed
Connector Type : Screws
Brand : QWORK
Switch Type : Nc Switch
Terminal : Screw
Material : Plastic
Circuit Type : 1-way
Mounting Type : Surface Mount
Actuator Type : NC

Shipping & Delivery

We currently ship within the United States only.

Order processing typically takes 3–5 business days, followed by an estimated 3–8 business days for delivery. The total estimated delivery time is 6–13 business days, excluding weekends and public holidays. A different timeframe may apply if stated on the product page before purchase.

Delivery dates are estimates, not guarantees. Shipping charges are shown at checkout.

See our Shipping & Delivery policy for full details.

Returns & Refunds

You may request a return within 30 days of receiving your item. Contact us before sending anything back.

For eligible change-of-mind returns, items must be unused and in their original condition, with tags, packaging, and accessories. Return shipping costs are your responsibility. We do not charge a restocking fee.

If your item arrives damaged, defective, or incorrect, contact us so we can review the issue and arrange a resolution. We cover required return shipping for confirmed issues.

Some exclusions apply. See our Returns & Refunds Policy for full details.

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QWORK MC-31 NC Wired Magnetic Door Window Contact Sensor, 20 Pack with 80 Screws, Surface-Mount White Plastic Alarm Reed Switch for Doors Windows Cabinets

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Details

About This

NC MAGNETIC CONTACT SENSOR: Surface-mounted wired magnetic door/window contact sensor (MC-31, NC). Magnet close = circuit conductive; magnet separated = circuit disconnected—ideal for wiring into security alarm loops.
8MM ACTUATION GAP: Designed for an actuation distance of 8mm ±18mm to help maintain reliable open/close detection during everyday door and window movement; suited for common home security system wiring.
SURFACE-MOUNT FOR QUICK RETROFIT: Screw-on design for fast installs on doors, windows, cabinet doors, and storage rooms—use for perimeter monitoring where recessed/drilled contacts aren’t convenient.
MATCHED HOUSING & HARDWARE: White plastic housings blend with frames; mounting hole diameter 5.8mm. Set includes 20 sensor/magnet pairs plus 80 screws to equip multiple openings in one project.
INSTALLATION NOTES: Keep the sensor and magnet aligned and on the same plane; verify the gap stays within the actuation range across the full swing. Package includes 20 sets (64×12×12mm & 64×20×12mm) and screws.

Overview

Operation Mode : automatic
Contact Type : Normally Closed
Connector Type : Screws
Brand : QWORK
Switch Type : Nc Switch
Terminal : Screw
Material : Plastic
Circuit Type : 1-way
Mounting Type : Surface Mount
Actuator Type : NC

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Frequently Asked Questions

Where can I find product specifications?

Select “View Product Details” to see each product’s specifications, available options, and included items. Check compatibility and usage instructions before ordering.

Where can I find shipping information?

We currently ship within the United States only. Shipping charges are shown at checkout. Please see our Shipping & Delivery page for processing and estimated delivery times.

How do I request a return?

You may request a return within 30 days of receiving your item. Contact us before sending anything back. Eligibility, exclusions, and return shipping costs are explained in our Returns & Refunds Policy.