Flush Magnetic Contact/Reed Switch

Code: FK77J

  • A magnet and reed switch sensor that can be used to protect doors and windows
  • Recessed into doors or windows and their frames for a flush finish providing a discreet magnetic switch with an operating gap of 15mm
  • Five terminal contacts
  • Limited stock may be available in some stores. Call us on 0844 557 6000 to check

Product details

Flush Magnetic Contact/Reed Switch

• A magnet and reed switch sensor that can be used to protect doors and windows
• Recessed into doors or windows and their frames for a flush finish providing a discreet magnetic switch with an operating gap of 15mm
• Five terminal contacts

What is this flush contact used for?
This flush contact, which comes with a magnet and reed switch, is great for protecting your wooden doors and windows discreetly. Once connected to a security system, when the distance between the reed switch and magnet exceeds 15mm the alarm will sound.

How does this flush contact protect my home?
When wired up to a security system a circuit is formed when both the magnet and reed switch are in the presence of each other (or within 13mm of each other). Once an intruder opens the protected door/window, this circuit is broken and the alarm will sound. Since this flush contact makes a circuit with the security system, if someone were to cut the wire connection the alarm would still sound, adding to the overall security.

Where is the ideal place to install this?
The distance between the magnet and reed switch has to be greater than 15mm before the alarm does go off. This means that it is best to locate this contact on doors or windows where the gap between the frame and the door/window is not too far apart or won’t get too much disturbance.

What will I need to get this connected to the security system?
Since this is a flush contact, a recess does need to be made in the door/window that it is to be fixed to. Then in order to connect this to your security system an alarm cable is needed (e.g. Order Code: XR89W). The five screws at the bottom of the reed switch are used to wire it up to the control panel, where three of the screws will be used to make security loops (brass in colour) and two will be used to connect to the reed (silver in colour), establishing an alarm loop.

Specification table
Operating gap 13 to 15 mm
Terminal type 5 screws
Mounting type Flush
Switch configuration Normally Closed
Dimensions
Dimensions - Reed Switch 36 mm x 22 mm x 1.75 mm
Dimensions - Magnet 36 mm x 22 mm x 1.75 mm
Dimensions - Recess 13.5 mm x 20 mm (dia)
Power
Voltage range (DC) 1 to 100V
Maximum current (DC) 500 mA
Voltage range (AC) 1 to 125V
Maximum current (AC) 500 mA
General
Material High Impact Polystyrene
Weight 18 g
Package contents
Flush reed switch and magnet
Fixing screws

Bulk Prices

Item code Item name Quantity Price
FK77J Flush Magnetic Contact/Reed Switch (1+) £0.90

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