Are you certain these switches are normally closed ? The picture of the light circuit indicates they are normally open, without magnet.

You are correct. Almost all of the reed switches on Amazon universally have the NO/NC descriptions backwards. Even the guy who responded to you about his RV steps was mistaken as his application would require a normally closed switch (ie. door opening and removing the magnet would allow the current to flow). I think the big misunderstanding is these vendors (and some people) think the "normal" position is with a magnet adjacent the reed switch. It is not.

Can this be used in a 12v application? I wanted to use ground to trigger a negative input(car alarm application)

Yes, I am also using it for 12V lights. You limit is going to be the 0.5amp load.

Are these waterproof or at least water resistant?

Yes . It is water proof . Just only wires connection for sensor ( over 10'' long) must be in dry area.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Gebildet 3pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black,Magnetic Door Sensor, Normally Open Magnetic Switch

Gebildet 3pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black,Magnetic Door Sensor, Normally Open Magnetic Switch

Product ID: 418705592

Details

Connector Type
Wire Leads
Contact Type
Normally Open
Current Rating
0.5 Amps
Operating Voltage
100 Volts (AC)
Operation Mode
NO/NC

📏10-15mm sensing range

🔋1,000,000+ service cycles

🔌0.5A current, 100V voltage

185 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

Secure transaction

Description

🔒 Stay a step ahead with Gebildet’s stealthy security sensor!

DURABILITY THAT LASTS - Engineered for over 1 million cycles, ensuring long-term security without fail.
PRECISION SENSING RANGE - Detects door/window status within a tight 10-15mm gap for reliable alerts.
COMPACT DISCREET DESIGN - Sleek 29x15.5x9mm size fits seamlessly into any modern security setup.
COMPLETE INSTALLATION KIT - Includes screws and stickers for quick, hassle-free mounting on any surface.
VERSATILE NO NC OPERATION - Supports both Normally Open and Normally Closed modes for flexible integration.

The Gebildet 3pcs Recessed Wired Security Window Gate Contact Sensor features a compact magnetic reed switch with a precise 10-15mm sensing distance, supporting Normally Open/Closed modes. Designed for durability with over 1 million operational cycles, it operates at 0.5A current and 100V voltage, delivering reliable, wired security alerts. The package includes mounting screws and stickers for easy installation, making it an ideal choice for professional-grade home or office security systems.

Specifications

ASIN	B085XQLQ3N
Best Sellers Rank	#344,607 in Home Improvement ( See Top 100 in Home Improvement ) #12,559 in Home Security Systems
Brand Name	Gebildet
Colour	Black
Compatible Devices	Security System
Connector Type	Wire Leads
Contact Type	Normally Open
Control Method	Remote
Current Rating	0.5 Amps
Customer Reviews	4.2 4.2 out of 5 stars (868)
Item Dimensions	14 x 11 x 1.1 Centimeters
Item Weight	0.05 Kilograms
Manufacturer	Gebildet
Material Type	wood
Model Number	DE453
Mounting Type	Wall Mount
Number of Items	1
Number of Positions	1
Operating Voltage	100 Volts (AC)
Operation Mode	NO/NC
Part Number	DE453
Switch Type	No/Nc
Terminal	Screw
UPC	726972605882
Wattage	10 Watts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.