2
SENTRY
®
300 Series
AUTOMATIC GATE OPENER
The Sentry Gate Opener is intended to be installed
on vehicular Class I, II, III or IV gates as defined by
UL 325, (the standard that regulates gate opener
safety, as established and made effective March 14,
2003, by Underwriters Laboratories, Inc.)
The Sentry Gate Opener is the first truly solar
charged gate opener for the Do It Yourself
market. The system design and the accessories
recommended are all Solar Friendly meaning that
they require the least amount of energy possible
to perform the job they were designed to do. The
solar option allows you to install the gate opener in
remote areas or in applications where you prefer to
be solar charged. Solar charging provides isolation
from lightning that might damage the unit via the
AC power needed for the transformer.
The Sentry Gate Opener is powered by a 12 VDC battery
(not included). This battery is charged
by the supplied transformer which requires AC power (120 VAC) to be either at the gate area or within
1000 feet of the gate area. If the AC power is more than 10 feet from the gate opener control box then
additional extension cable is required (see Sentry charge cable extension kit information).
If preferred, you may use the optional Sentry Solar Panel kit (PN 520015) to charge the battery.
Typically only one panel will be required. The Sentry Gate Opener is capable of a high number of
cycles per day. For information on what you can expect from a solar charged system see the solar
charging section of this manual. (page 41) Accessories that are added to your gate opener must be
solar friendly accessories and they will be identified as such.
The Sentry Gate Opener features an easy to connect Plug N Go wiring harness that eliminates
the need for any complicated wiring
. The only wiring required consists of two wires from the
harness that must be connected to the battery positive terminal (red wire) and battery negative
terminal (black wire). All components have been pre-installed so that installation can typically be
completed in less than one hour.
The Sentry control board features high quality components and industry leading ideas such
as auto resetting fuses for motor protection.
The old automotive type fuse that frequently fail
have been designed out of this controller to avoid the unnecessary expense of buying fuses. Another
patent pending item designed into the control board is the on board potentiometers for adjusting stop
limits. Many other features have been designed into the control board to ensure superior operation
for years to come. Attention to detail and quality parts makes the Sentry Gate Opener the First High
Quality Gate Opener for the Do It Yourself Installer. USAutomatic appreciates the fact you have
recognized the quality of the Sentry gate opener for your installation and would appreciate your
comments on how we are doing so that we may continue to build and design products in the future
that work the way you want them to.
PLEASE READ THE ENTIRE MANUAL CAREFULLY PRIOR TO INSTALLATION.
In doing so, along with performing the installation in step-by-step order, you will achieve optimal
results. Your Sentry control board was designed with a current sense safety feature and we strongly
recommend other safety devices such as photo eyes to make each particular installation as safe as
possible and reduce the risk of personal injury and/or property damage.
Please read carefully and understand the Safety Section of the manual.
