In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Zoot wrote:

The maglocks are nice. T&E -- the reason for maglocks versus some kind of actual solenoid or mechanically activated "lock" or deadbolt is that in the event of a catastrophic power outage, the door can be opened without electricity or even a UPS backup (i.e. electricity is required only to keep the door locked, not to unlock it). The downside is that it's always drawing current, and of course, in the event of a power outage, anybody can get in :-)

Re: SX and RFID -- the RFID reader sold by Parallax is quite simple. A few serial statements in SX/B and you should be on your way.

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