Exit devices, lock-ups and alarms ...

Exit devices, lock-ups and alarms that are used in the United States are now make submissive to additional regulations established last year by dint of the Builders Hardware Manufacturers Association (BHMA) and the American National Standards Institute (ANSI).
The ANSI/BHMA A156.29 standard has place general requirements and specific proof methods for these products. Revisions from the previous standard include increased performance requirements for standards and the addition of a slam experiment which requires the closer for a door expanded to 90 degrees to completely close in 2.5 seconds, with no deceleration.