We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver-gray zinc-alloy magnetic reed switch with screw holes and two-wire cable

Unique-Bargains

Unique-Bargains MC-56 NC Magnetic Reed Switch Security 30mm 0.5A 10W 1007UL#22AWG Silver Gray

SKU CH-JYY1-ATG4V MPN MC-56

Normally closed magnetic reed switch for alarm systems, actuates at 30mm with 0.5A, 10W rating and 28.5cm cable

  • TypeAlarm System
  • NC contact keeps circuit closed until magnet moves away
  • 30 mm actuation distance detects door or window opening
  • 5 A max switch current handles alarm circuit loads
  • Zinc-alloy housing with screw mount installs on metal or wood frames
  • 5 cm 1007 UL 22 AWG leads reach nearby control panel

Magnetic Reed Switch for Alarm Systems

This magnetic reed switch operates by detecting an applied magnetic field to open or close a circuit. It features a normally closed contact configuration rated for a maximum of 0.5A current and 10W power at DC100V. The assembly includes a silver gray zinc alloy housing and 28.5cm 1007UL#22AWG wires for screw surface mounting.

Suits Door and Window Monitoring.

The device suits installers adding perimeter sensors to alarm systems in homes or factories where a 30mm actuation distance fits the door or window gap. Builders needing to switch loads above 0.5A or voltages beyond DC100V should look at alternative relays or contactors. It is also unsuitable for applications requiring a normally open contact logic.

30mm Actuation Distance Decides Fit

The 30mm actuation distance is the critical specification that determines whether the switch will trigger reliably on a specific door or window. If the gap between the mounting surfaces exceeds this figure, the magnet will not hold the reed closed and the circuit will not conduct. Verify the exact spacing before purchase.

Highlights

  • NC contact keeps circuit closed until magnet moves away
  • 30 mm actuation distance detects door or window opening
  • 5 A max switch current handles alarm circuit loads
  • Zinc-alloy housing with screw mount installs on metal or wood frames
  • 5 cm 1007 UL 22 AWG leads reach nearby control panel

Specifications

BrandUnique Bargains
TypeAlarm System

Questions about this item

Does the MC-56 reed switch generate any heat or noise when it stays closed all day?

The MC-56 is a passive magnetic reed switch with no moving parts that produce heat or sound. It simply opens or closes a circuit when the magnet moves within the 30mm actuation distance, drawing up to 0.5A at 10W maximum.

What wiring or control panel must I already have to connect this NC contact?

You need a security panel or alarm input that accepts a normally closed dry contact. The switch ships with two 28.5cm 1007UL#22AWG leads ready to terminate on screw terminals or a zone expander.

Will the 4.2mm mounting holes line up with the brackets on my existing steel garage door?

The housing measures 47.5 x 24 x 14.4mm with 4.2mm screw holes, so it fits standard surface-mount brackets. Verify your current bracket spacing matches those centres before drilling.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.