Features
The Plug N Go design of all installed components and the easy to understand Sentry control board makes this the simplest gate opener for the Do-It-Yourself installer. Typical installation time is under one hour.
Sentry 300 automatic gate opener
We don't compete with other DIY gate openers...we replace them.
The superior design and features of the Sentry 300 automatic gate opener makes it impossible to compare cost to similar products. Quality, reliability and no hidden additional costs associated with the Sentry gate opener make the Sentry kits the best value on the market.
Heavy Duty
Battery Powered
Solar or AC Charged
- 3 year limited warranty
- 2 transmitters included with the opener to open the gate from your car
- Plug N Go harness eliminates wiring
- Up to 50 cycles per day on a 5 watt solar panel
- Includes universal mounting brackets and hardware for round and square posts
- Charge controller and transformer (Patent Pending) included with all operators
- 16" stroke linear actuator made in USA
- Color installation manual/DVD
The Sentry 300 automatic gate opener is powered by a 12-Volt dc battery (not included). This battery is charged by the supplied transformer which requires AC power (120 VAC) to be either at the gates area or within 1000 feet of the gates area. If the AC power is more than 10 feet from the gate openers control box than additional extension cable is required.
All Sentry Gate Opener Kits include both AC and Solar charging devices. Typically, only one panel will be required. The Sentry gate opener is capable of a high number of cycles per day. Accessories that are added to your gate opener must be solar friendly accessories and they will be identified as such. Review the solar region map to determine the number of cycles per day you can expect from a solar charged system.
The Sentry 300 control board features high quality components and industry leading ideas such as auto resetting fuses for motor protection. The old auto type fuse that blows and must be replaced has 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 Automatic 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 300 automatic gate openers control board was designed with a current sense safety feature and we strongly recommend other safety devices such as photo eyes to make each 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.
Designed to open all types of gates in all kinds of places.
The Sentry gate opener is designed and rated for vehicular class I, II, III or IV swing gates up to 20 feet in length. Supplied with universal mounting brackets to fit most types of gate installations hinge posts from 2 3/8" to 6" round or square can be used with the included universal mounting hardware.
Ornamental Iron
13 feet max length.
Max weight 400 lbs.
Farm Gate
20 feet max length.
Max weight 250 lbs.
Ranch Gate
16 feet length.
Max weight 300 lbs.
Chain Link Gate
14 feet length.
Max weight 350 lbs.
Frequently Asked Questions
Will the Sentry 300 work on my gate?
Yes, the Sentry 300 was designed to work on a wide variety of swing gate applications. The Sentry 300 effectively supports Ornamental Iron and Vinyl Gates up to 12 ft and 400 lbs., Chain Link Gates up to 14 ft and 300 lbs. and Farm and Ranch Gates up to 20 ft and 250 lbs.
Can I really install the Sentry 300 Gate Opener myself?
Yes, the Sentry gate operator installation manual is packed with color photos and all the details needed. The universal mounting brackets allow installation without welding and the Plug N Go wiring harness eliminates all complicated wiring.
Can I install the Sentry 300 automatic gate opener on my dual swing gates?
YES – the Sentry 300 is designed to operate a single swing gate (part # 120320) or a dual swing gate (part# 120323).
Is everything I need to install the Sentry 300 included in the package?
Yes, everything needed to install the Sentry 300 including mounting hardware, AC charger, wiring harness, actuator and detailed instructions is included in the Sentry 300 package. Note: if “Push-to-Open” application, a mounting tube (Part # 610420) may be required.
I would like to charge my battery with solar power, is it reliable?
Yes, the Sentry 300 automatic gate opener is the first reliable solar gate opener on the market. The gate system was designed to operate on a single 5-watt solar panel. See the solar region map for approximate number of cycles for the region in which you live.
How many seconds does it take to open or close a gate?
The Sentry 300 automatic gate opener cycle time is about 16 seconds on a 90-degree opening. Compared to other products it is about 20% faster.
Where can I go to get additional information or help?
Additional help is available by calling the Sentry help center staffed by USAutomatic employees at 1-866-711-0001 or by emailing support@sentrygateopener.com.
Do I need electricity 120 VAC at the gate location?
NO – the Sentry gate openers or powered by a 12 V DC battery (not included), which can be charged with the optional solar panel kit allowing for installation any place your gate is located without needing electricity at the gate.
Will I need to buy additional solar panels?
The answer is very dependent on the region of the country in which you live. Typically, no additional panels will be needed for most installations. The Sentry Solar Panel kit will provide up to 50 cycles a day depending on the region in which you live. USAutomatic Sentry 300 Solar Gate Opener qualifies for Federal Tax Credit.
What type of accessories can I add to my Sentry 300 automatic gate opener?
The Sentry Gate Opener is designed to work with all Sentry accessories such as photo eyes for safety, exit sensors, keypads, wireless push to operate buttons, 7-day timers and solenoid locks. Any accessory added to system must be Solar friendly to help prevent premature battery failure. Solar friendly accessories are designed to operate on the minimal amount of energy.
