Shipping: Shipped from distribution center in Columbus, United States of America.
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These are used to secure an alarm circuit on a door or window. Sold as a pair, one has a magnet inside, the other a reed switch. They have powerful magnets, with self adhesive or screw mount, and screw terminal connections.
Reed Switch contacts: closed when both units are together (ie current flows), and open when apart.
Normally CLOSED (NC) per pair.
Contact operation:
Contacts are closed cicuit when the magnet is alongside the switch. For alarm installation this is denoted as the "normal" state as the door/window is secure and the alarm is armed
United States of America
Angel Snowflakes from Miami, United States
Very happy, what is great about it is the warranty!
Zenith Lead from Saint Petersburg, Russia
Best investment ever. Quick delivery!
Dandy from Izhevsk, Russia
Not too bad all with quick delivery
Meman5000 from Bielefeld, Germany
I brought this for my son as a xmas present - he loves it awesome quality
copilot from Newcastle upon Tyne, United Kingdom
You guys rock thanks for the great prices