HireLV Handbook › Diagrams › Access control › Maglock egress

Maglock with REX motion, exit button and fire alarm release

The wiring that passes inspection, with the code text quoted.

Code text quoted from IBC 2021. Your AHJ and adopted edition decide. Verify locally.

Wire the lock positive feed through each normally closed contact in series. Any one opening drops lock power: the controller on a valid read, the REX motion on approach, the push-to-exit button when pressed, and the fire alarm through the power supply FACP input.

The button has to cut lock power directly, independent of the access electronics. A button that only lands on a controller input does not meet that wording.

Sensor release needs both the approach sensor and the manual button. The REX motion alone is not enough.

The lock stays unlocked for not less than 30 seconds. Use a button with a timer, or the power supply timer, and verify that part.

Fire alarm release is wired through the power supply FACP input so it does not depend on access-control software.

What the source says Flag

Item	Text	Edition
Sensor	installed on the egress side, arranged to detect an occupant approaching the doors	IBC 1010.2.12 (2021)
Power loss	Loss of power to the lock or locking system shall automatically unlock the electric locks.	IBC 1010.2.12 (2021)
Button	direct interruption of power to the electric lock—independent of other electronics	IBC 1010.2.12 (2021)
Hold	remain unlocked for not less than 30 seconds	IBC 1010.2.12 (2021)
Fire alarm	shall automatically unlock until the fire alarm system has been reset	IBC 1010.2.12 (2021)
Sign	PUSH TO EXIT	IBC 1010.2.12 (2021)

Notes

Section numbers change by edition: 2018 is 1010.1.9.9, 2015 is 1010.1.9.8, 2012 is 1008.1.9.8.
NFPA 101 7.2.1.6.2 has the same items: within 60 inches, PUSH TO EXIT, and 30 seconds.
A maglock on an egress door is permitted under sensor release, except Group H, or delayed egress, when every listed rule is met.

Planning aid only. Values are typical and vary by manufacturer, code edition and jurisdiction. Verify with manufacturer data, NEC/NFPA/TIA and the local AHJ. HireLV is not liable for designs based on these tools.