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DIY RFID kill switch

YouTube Video

Time Delay Relay Schematic:

3 TRANSPONDER RFID KEY for $18 with S+H:

Basically it's a 27 seconds time delay relay, RFID tag system, project box from Radio Shack, some wire and heat shrink.

if you have any questions let me know.

Schematic with RFID and Time Delay Relay in .PDF
The gadget spec URL could not be found

Technical problems with RFID: