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>EXCLUSIVE: US Capitol Doors on Jan. 6 Were Magnetically Locked – Someone Inside Capitol Security Had to Release the Lock to Open the Doors (VIDEO)
At the bottom of the article:
Information on magnetic locks. Magnetic locks are strong. But according to safety, mag locked doors must have an egress option in case of fire or emergency exit. Therefore there are 2 options to allow mag locked doors to open. One is fire alarm. If fire alarm goes off, mag locks will unlock if wired correctly. The second option is a REX sensor. (Request to exit). Rex sensor is an interior ceiling mounted (normally) proximity sensor.
Both of these options involve someone on the inside.
https://www.thegatewaypundit.com/2021/05/huge-exclusive-us-capitol-doors-jan-6-magnetically-locked-someone-inside-capitol-security-release-lock-open-doors-video/