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3 Sets NO/NC Black Magnetic Switch Wiring Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System

3 Sets NO/NC Black Magnetic Switch Wiring Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System

Q: 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.

Q: 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.

Q: 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.

3.8/5

Product ID: 231344510

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Details

Color
black NO
Brand
Gebildet
Power Source
Corded
Compatible Devices
Security
Product Dimensions
1.14"L x x

🔄1,000,000+ switch cycles lifespan

🔋Supports up to 100V max voltage

🧲Dual NO/NC switch modes for flexible use

Description

🛡️ Invisible security, visible peace of mind.

DUAL MODE FLEXIBILITY - Switch between Normally Open (NO) and Normally Closed (NC) configurations effortlessly to suit any security protocol.
DURABILITY THAT LASTS - Engineered for over 1 million switch cycles, these sensors guarantee long-term reliability without frequent replacements.
COMPLETE INSTALLATION KIT - Includes 3 sensor sets, 6 adhesive stickers, and 12 screws for a hassle-free, professional-grade installation experience.
SEAMLESS SECURITY INTEGRATION - Easily retrofit your access control or alarm system with sleek, black magnetic sensors that blend invisibly into doors and windows.
VERSATILE VOLTAGE COMPATIBILITY - Operates flawlessly across a wide voltage range (3V to 48V), ensuring compatibility with most low-voltage security setups.

This 3-set pack of black magnetic NO/NC reed switches offers a compact (29x15x9mm) and durable solution for access control and alarm systems. With a 30cm cable, 100V max voltage, and 0.5A max current, these sensors support flexible wiring options and dual switch modes. Designed for wooden doors and windows, they provide up to 1 million reliable activations, making them ideal for professional-grade security upgrades.

Specifications

Battery Description	Batteries not included
Voltage	100 Volts
Mounting Type	Door Mount
Maximum Range	15 Meters
Sensor Technology	Contact Sensor
UPC	726972605882
Manufacturer	Gebildet
Part Number	DE453
Item Weight	1.76 ounces
Product Dimensions	1.14 x 0.59 x 0.35 inches
Item model number	DE453
Material	wood
Horsepower	0.1 hp
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Description Pile	Batteries not included

Have a Question? See What Others Asked

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

What color are these? Pictures suggest black, but description says white.

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

Are these waterproof or at least water resistant?

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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€ 19.21

Duties & taxes incl.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago