Next is the selection of exit device. In general for public occupancy applications, a listed free exit device like the Securitron TSB-3 (touch sense bar) would be used to allow free and immediate exit from an opening at all times. As an alternate, UL listed exit system using a motion detector like the Securitron XMS used in conjunction with an emergency release button like the Securitron EEB2 or EEB3N can be used or may be the only option as would be the case with an all glass door where a panic device can't be easily installed.
Lastly this application can be used with or without an access control system and also gives the end user a couple of advantages over other options. Magnetic locks are high durability, low maintenance, self aligning and high duty cycle devices. On doors with high traffic, you will be hard pressed to find a better type of device. Secondly they are fail safe. This means that these openings can be released from a signal from the fire protective or building general alarm system. This allows occupants easy exit in an emergency as well as allowing emergency responders like police, fire and emergency medical easy access in emergency situations.
The delayed egress application has become much more popular in recent years and the basic intent of an exit delay system is to provide a compromise between building security and life safety. It is popular as part of a loss prevention strategy for retailers and with health and nursing specialists to protect wandering patients and visitors. It is also a good way to force controlled access and egress (i.e. card in, card out) on doors that are also required for emergency exit. With this type of system, the door is locked from both the access and egress side. From the egress side initiation of this system is usually accomplished by pressing an exit device or moving the door. This starts an alarm process where the door will open after a delay period usually 15 seconds but this can be extended to 30 seconds with approval of the local AHJ. After the door is released, it can be reset and re-locked via a manual reset device like a key switch.
Exit device initiated exit delay systems lend themselves well to applications where staff uses and access control system (i.e. digital keypad, card reader, etcetera) for access and egress but the door is a means of egress in an emergency like a pass through door from a sales floor to a warehouse area or an employee entrance that doubles as an exit or a door that leads to a dementia ward or nursery in a hospital, basically anywhere you want to be able grant controlled access and egress on a door in a high traffic environment that is also an emergency exit. These systems can be a two-piece installation like the Securitron IEXD (exit delay lock) with a Securitron TSB-3 (touch sense bar) or a modular system, say a bank of four doors where you could use something like the one Securitron BA-XDT (exit delay timer), one Securitron MK (reset Key switch), four Securitron TSB-3 (touch sense bars), four Securitron M62 (magnetic locks 1200lbs) and one Securitron BPS series power supply.
Door movement exit delay systems like the Securitron IMXD (door movement exit delay lock) lend themselves well to exit only applications with existing exit devices like the emergency exits in a retail store, hospital or nursing home. With door movement, if the door is not secured with another mechanical device, access to the area could be gained by simply pulling on the door. Because of this mating with a mechanical device like a panic bar door movement is also better suited to lower traffic applications like exit only doors.
Magnetic locks have always been a good option. Because a magnetic lock is very tolerant to mis -alignment, the normal sag and movement in gates is less of an issue then it would be with a mechanical device like an electric deadbolt. If the lock is sealed and weatherproof like the Securitron M62G series locks, weathering and loss of operation are minimized. One of the other advantages of magnetic locks on gates is the fact that they can be used in different orientations for different types of gate travel so one type of lock can be used on both swinging and sliding gates. This makes device selection much easier.
The locksmith must determine the hierarchy of LAHJs for a particular situation, and to take the necessary steps to assure compliance.
Securitron Magnalock Corp. has developed more than 25 packaged electronic access control systems for controlling from one to three doors. These packaged electronic systems include the lock(s...