These are life-safety devices. Listings and the fire panel interface matter.
Match voltage and the release input on the Transmitter Solutions holder page.
Door HardwareReviewed 2026-08-28
Door holders
Mag holders that keep a fire door open and release on alarm.
Also called
door holderelectromagnetic holderdoor releaseDoor holders and releasesdoor holders and releases
Catalog fields
Lock TypeHolding Force
Source: Transmitter Solutions product training