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Effective August 1, 2018 a vehicular swing gate operator must have provisions for, or be supplied
with, at least two independent entrapment protection means for each direction of travel as specified
in current UL325 standard Table 31.1. At installation, both entrapment protection devices must be
installed and operational before gate operation is allowed. *Exception allowed if no entrapment exist
in one direction of travel then only 1 device is required, the other direction must have 2 entrapment
protection devices active. The gate operator will monitor for proper operation before movement is
allowed.
USAutomatic control boards utilize type A (Inherent entrapment protection system) as the first
entrapment protection means identified. The second entrapment device identified must be a
monitored Type B1 or Type B2 device that has been tested and approved with the gate operator.
These devices are listed below.
USAutomatic control boards can monitor one photo eye (B1) for the open direction, one photo eye
(B1) for the closed direction and one contact edge (B2) for the open/close direction. If additional
entrapment devices are required the USAutomatic expansion module (part # 500015) is required
Type B1 - Non-contact sensor (photoelectric sensor or the equivalent). Identified as Normally Closed
N/C contact switching.
Type B2 - Contact sensor (edge device or the equivalent). Identified as 10K resistor installed for
presence monitoring.
Type D - Actuating device requiring continuous pressure to maintain motion of the gate.
User must be within sight of the gate and verify gate path is clear before operating.
External entrapment devices approved for use are listed below
Wired Contact Edge Type B2 Devices
Manufacturer: ASO
Models: Sentir Edge 95.25, 92.20, 85, 35.55, 65, 25.30, 25.45, 15.10
Manufacturer: Miller Edge
Models: MGR20, MGS20, ME120, MG020, ME112, MG123
Wireless Contact Edge Type B2 Devices
Transmitter Solutions:
IGAZE RE KIT-UL
EMX Model:
WEL-200K
Non-Contact sensors (photoelectric sensor or the equivalent) Type B1 Devices
Manufacturer: USAutomatic, LLC
Models: 550011, 550014
The entrapment zones illustrations on the following page defines the most common entrapment
areas. It is the responsibility of the installer to identify all entrapment areas and install the appropriate
compliant monitored entrapment device or devices to protect each area identified.
USAutomatic recommends upgrading all systems to current UL325 standards.
Entrapment Devices Required and Approved for Operation