Controlled Products Systems Group OH200 - Manual (Page 5)

Class one: Residential
A vehicle gate operator intended for use at a home of one to four single family dwellings, garages or
parking area.
Class Two: Commercial or General Public Access
A vehicular gate operator intended for use at a commercial location or building such as a multi-family
housing unit (five or more single family units), hotel, garages, retail stores, other buildings servicing the
general public.
Class three: Industrial or limited Access
A vehicular gate operator intended for use at an industrial location or building such as a factory, loading
dock area, or other locations not intended to service the general public.
Class Four: Restricted Access
A vehicular gate operator intended for use at a guarded industrial location or building such as airport
security areas or other restricted access locations not servicing the general public where unauthorized
access is prevented via supervision by security personnel.
Other components required to satisfy UL 325
Each class must have a primary and secondary means to sense and react to obstructions within two
seconds.
The six types of obstruction sensing systems are:
Type A:
Inherent obstruction sensing system. This system must sense and initiate the reverse of the gate within
two seconds of contact with a solid object.
Type B 1:
Provision for connection of a non-contact device can be used, such as a secondary protection.
Type B2:
Provision for connection of a contact sensor. Examples include an edge device or equivalent. This can
be used for secondary protection.
Type C:
Inherent adjustable clutch or pressure relief valve.
Type D:
Provision for connection of or provided with and actuation device requiring continuous pressure.
Type E:
Inherent audio alarm.
All of All-O-Matic Inc’s Gate operators conform to the most ridged Class One.
DIFFERENT UL 325 CLASS TYPES
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