How is this wired: to a transmitter? to the garage opener? Why 28V?

It's a simple switch, more for someone knowledgeable about basic electronic components. You could hook it up to a power supply and a light, to turn on a light when it the magnet is nearby. Or you could hook it up to a smart house hub designed to take in simple signals. It's not just 28V, it's 0V-28V (simple answer, more volts = more heat = higher chance of fire. bigger wires reduces heat/volt, but increases cost of device, so they limit it to a chosen level, in this case 28V)

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🔐 Secure your space with smart magnetic precision!

ROBUST CONSTRUCTION - Alloy zinc case with metal tube protection ensures long-lasting durability
VERSATILE APPLICATION - Ideal for both industrial and residential overhead door security
WEATHERPROOF RELIABILITY - Epoxy sealed waterproof design for consistent performance in all conditions
PRECISION MAGNETIC DETECTION - NC reed switch triggers alarm instantly when door opens
UNIVERSAL FIT EASY INSTALL - Adjustable L bracket fits most overhead door channels effortlessly

This Magnetic Switch Alarm Sensor features a normally closed reed switch housed in a sturdy alloy zinc case with aluminum L bracket. Its epoxy-sealed waterproof design and adjustable mounting make it perfect for reliable overhead door security in both residential and industrial settings, detecting door status with a 50mm+ operation gap without requiring batteries.

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E£ 2246

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Sensor technology	Contact Sensor
Manufacturer	WESUA
Part number	MCS-61L
Item Weight	245 g
Product Dimensions	25 x 15 x 1 cm; 245 g
Item model number	MCS-61L
Color	silver-grey
Included components	Switch
Batteries Required?	No

Magnetic Switch Alarm Sensor Overhead Gara Door Contacts with L

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