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Magnetic Reed Switch MC-31 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, for Home Security and Burglar Alarm Magnetic Reed Switch,Sets of 2
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 20, 2026 11:20 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price sits right around what this item typically fetches.
- 🏷️The retail sticker price has been slashed by 47% — a steep markdown from the official listing.
- 📉Going back roughly eight months, a more competitive price has not appeared — this stands out as a strong value by recent standards.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
1.22/20
Deal Strength
13/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
liuuuu
📦 Fulfillment
Fulfilled by Amazon
Product Details
✓【Package Included】: 2Sets x MC-31 Magnetic Reed Switch.(Mounting screws are includes).
✓【Function】: The reed switch is an electrical switch operated by an applied magnetic field. Designed for use with alarm systems. Great for use in family and factory window, door. etc.
✓【Install Distance】 ：Gap between 2 pieces more than 15mm, less than 25mm.White color make home great and beautiful. Anti-fire ABS material.
✓【Switch Type】: NO means normally open: when the magnet separate, the circuit is conductive( light on ); when the magnet together, the circuit is not conductive ( light off ), NC means normally closed: when the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ).
✓【Reed Switch】：Important : When the magnet is near it makes connectivity, when the magnet is removed connectivity is broken.Wired magnetic door/windows contact can be added to wireless/wired Alarm Systems.(some wireless system has wired zones),Here with our 90-day money back risk-free purchase guarantee.
⚙️ Specifications
Operation Mode
Electrical
Current Rating
0.5 A
Operating Voltage
100 volts
Contact Type
Normally Closed
Connector Type
Screws
Brand
JING
Switch Type
No, Nc
Terminal
Screw
Material
Acrylonitrile Butadiene Styrene
Circuit Type
Normally Open
Mounting Type
Door Mount
