Glass Reed Switches

 

GR1

$0.95

 

Length:
Inches of glass:   1.2"
Centimeters:   3.0cm

NORMALLY OPEN

GR2

$0.95

 

Length
Inches of glass:   0.75"
Centimeters:   2.0cm

NORMALLY OPEN

GR3
$0.95


 

Length

Inches of glass:

 0.65"

Centimeters:

1.5cm

NORMALLY OPEN

 

 

 

Reed switches for fun and security

These handy devices are used with magnets to detect doors and windows opening. They can also be used for amusement in conjunction with electronic counters, lights, LEDs and other devices.

Glass reed switches are very fragile so please take note:

If you apply heat to the wire it will expand and shatter the glass. What you must do is to hold the wire near to the glass (but NOT touching the glass!) with a pair of "needle-nose" pliers. This will suck heat away before it reaches the wire in the glass. You can then use a very hot iron to quickly "tin" the end of the wire with solder.
Then tinned copper wire can be soldered to the reed switch wires, still using the pliers.

If you need to bend or shorten the reed switch wires (not recommended) you must again grip the wire close to the glass with pliers and bend or cut the wire furthest from the glass. The pliers will prevent any strain on the glass.

Once it's prepared, the reed switch can be glued in place using hot-melt adhesive or similar. If you use Evo-Stick DO NOT let it touch any connections because it corrodes metal.

 

 

 

Email us if you have any questions.

Place an order

A1 Electronic Parts
196 North Queen St.
Toronto, Ontario
M9C 4Y1
Tel: (416) 255-0343
Fax: (416) 255-4617