Automatic Gate Control Systems: How They Secure Your Property

An automatic gate control system is the combination of a gate motor, a control board and the access devices that decide who can open the gate. The motor moves the gate. The control board runs the logic: when to open, when to stop, when to close again. The access devices, such as remotes, keypads, intercoms, phone apps and card readers, are how an authorised person asks the gate to open.

Security comes from all three working together. A gate that closes itself behind every car, stays locked against a push and only responds to known credentials is a genuine barrier. A gate that sits open all afternoon, runs on a code half the street knows, or can be levered off its hinges is mostly decoration.

This guide explains how gate control and gate access control systems work, compares the access options available to Australian homes and businesses, and covers the safety, power and installation points that decide how secure your gate really is.

What Is an Automatic Gate Control System?

An automatic gate control system is the set of electrical and mechanical parts that opens, closes and secures a gate without anyone pushing it. You will also see it called a gate automation system or a gate entry system. The part that decides who is allowed in is usually called gate access control.

Most systems are built from the same six parts:

Many residential DIY kits, including Gatomate’s, run the motor on 24V DC. The low voltage side is safer to work on and makes battery backup straightforward, whether the kit is fed from a mains adapter or a solar panel and battery.

How a Gate Control System Decides Who Gets In

Whether you use a single remote or a cloud-managed video intercom, every gate access control system does the same four jobs:

1. Identify. It reads a credential: a remote code, a PIN, a phone, a card or fob, a number plate, or a person answering an intercom call.

2. Decide. It checks whether that credential is valid right now, for example a remote stored in the receiver or a PIN that has not been deleted.

3. Trigger. It sends an open command to the control board, usually through a radio receiver or a simple relay (dry contact) input.

4. Secure again. It closes the gate once the vehicle has cleared and, where a lock is fitted, locks it. This relies on the auto-close timer and the safety beams.

The fourth step is where many home installations fall down. If auto-close is switched off, even the best keypad still leaves the gate standing open until someone remembers to shut it.

Gate Access Control Options Compared

The most common gate access control options for Australian properties are remote controls, keypads, intercoms (audio or video), phone app control over Wi-Fi or 4G, card or fob readers, and number plate recognition. Most homes combine two: one method for the people who live there and one for visitors.

Remote controls

Remotes are still the everyday credential for most driveway gates. Many Australian gate remotes, including Gatomate’s, work on the 433.92 MHz band. For security, the feature that matters is rolling code (also called hopping code), which changes the transmitted code every time you press the button. Older fixed-code remotes can be copied far more easily. Our guide to whether gate remotes can be hacked explains the difference in detail, and if your remote only works up close, see how to fix gate remote range.

Keypads

A keypad lets people in without handing out a remote, which suits tradies, cleaners and delivery drivers. Mount it on a gooseneck stand at driver’s window height so nobody has to get out of the car. Give each regular user their own code, delete codes when a job finishes, and change the installer’s default code on day one. In hot inland areas, a keypad that faces west cops the full afternoon sun, so a shaded position or UV-stable housing helps it last. Gatomate stocks wireless keypads and gooseneck stands that pair with our opener kits.

Intercoms and video entry

An intercom lets a visitor call you from the gate so you can decide whether to open it. Video models add a camera, which is the main reason people upgrade: you can see who is there before they are on your driveway. The practical choice is between wired, Wi-Fi and 4G units, and it mostly comes down to how far the gate is from the house. We compare them in our guide to the best intercom systems for automatic gates.

Phone apps and smart home control

Wi-Fi and 4G control modules let you open the gate from anywhere, send access to a visitor and see when the gate was used. On rural and acreage blocks, a 4G module is often the only practical option because home Wi-Fi rarely reaches a gate hundreds of metres away. If you are connecting an existing gate to a smart home setup, read how to upgrade an existing gate to a smart gate.

Cards, fobs and number plate recognition

These are more common on strata, commercial and industrial sites where many people need access and each credential must be cancellable on its own. Number plate recognition is the most convenient option for frequent drivers, but it still needs a second method for visitors and delivery vehicles.

How Automatic Gates Improve Property Security

Controlled access

The biggest security benefit is control over who enters and leaves. Manual gates get left open, forgotten or propped, especially on busy mornings. An automatic gate with auto-close enabled returns to the closed position after every use, and it only opens for people holding a valid credential, whether that is a remote, a PIN or a phone.

A visible barrier

A closed, automated gate adds a physical obstacle and signals that the property is managed. It makes casual entry by car or on foot harder and less appealing. It will not stop a determined intruder who is prepared to climb a fence, so treat the gate as one layer of security alongside lighting, locks and cameras, not the whole plan.

Cameras and entry records

Gate systems can be paired with security cameras and video intercoms so you can watch the entrance live, review footage later and, with app-based controllers, see a record of when the gate opened. If something does go wrong, a clear view of the gate area is often the most useful evidence you have. Surveillance and privacy laws differ between Australian states, so aim cameras at your own driveway rather than the street or a neighbour’s yard, and check your state’s rules before recording audio.

Locks that resist forced entry

A sliding gate is held closed by the motor’s gearing. A swing gate relies more on its motor arms, and a solid leaf can be levered or pushed by strong wind. An electric bolt lock or magnetic lock holds the leaves in place and is worth fitting on any swing gate you rely on for security.

What an Automatic Gate Will Not Do on Its Own

Most gate security problems are not technology failures. They come from how the system is set up and used:

• Tailgating. A second car or a person on foot can follow a resident through before the gate closes. A shorter auto-close delay and a separate pedestrian gate reduce the window.

• Code creep. A single keypad code shared with every tradie and relative stops being a secret. Individual codes that you delete fix this.

• An open manual release. The release key lets you move the gate by hand during a fault or blackout. If the release is left unlocked, anyone can do the same.

• Weak points beside the gate. A tall gate next to a low side fence or an open side path only redirects people.

• Unknown power-failure behaviour. Know whether your gate stays shut, can be opened on battery, or needs the manual release when the power goes out. Our guide to how long a gate runs on battery backup covers this.

Security Features Worth Having

When comparing gate automation systems or upgrading an existing one, these features make the biggest practical difference:

• Rolling-code remotes rather than fixed-code remotes

• An adjustable auto-close timer that you actually leave switched on

• Photoelectric safety beams across the opening

• An electric bolt lock or magnetic lock on swing gates

• Battery backup, so the gate keeps working through short blackouts

• A keypad that supports individual user codes

• App or intercom control with notifications or an event history

• A manual release that locks, with the key kept inside the house

• A flashing warning light so people know the gate is moving

Safety Is Part of Security: Sensors and AS/NZS 60335.2.103

In Australia, powered gate drives are covered by AS/NZS 60335.2.103, the safety standard for drives for gates, doors and windows. The 2024 edition was published in November 2024, and the earlier 2016 edition remains current until it is superseded on 29 November 2027. The standard deals with the risks of a moving gate, including impact and entrapment, which is why features such as obstruction detection and safety beams matter. For a plain-English explanation, see our guide to Australian safety standards for automatic gates.

Photoelectric sensors (also called PE beams or photocells) send an infrared beam across the gateway. If something breaks the beam while the gate is closing, the gate stops and reverses. Through-beam sensors use a transmitter and receiver on opposite sides of the driveway. Reflective sensors bounce the beam off a reflector, so you only need to run a cable to one side. Mount beams at a height that will detect a small child or a dog, not just a car bumper.

Test the safety features once a month. With the gate closing, walk an object such as a cardboard box through the beam and confirm the gate stops and reverses. Clean the sensor lenses at the same time, because dust, spider webs and condensation are common causes of false triggers. If your gate keeps stopping or reversing for no obvious reason, work through why an automatic gate keeps reversing rather than disconnecting the sensors. A gate with its safety devices bypassed is a hazard, and it is also more likely to be switched off and left open.

Does the Gate Type Change the Control System?

The access side (remotes, keypads, intercoms, apps) works much the same on any gate. The operator, locking and safety layout change with the gate type.

For sliding gates, browse our sliding gate opener kits. For swing gates, start with single swing gate openers or double swing gate openers, and compare ram, articulated arm and underground swing motors if you are not sure which drive suits your gate.

Choosing the Right Setup for Your Property

Changes to a gate on common property generally need approval from the owners corporation or body corporate, and strata rules differ between states, so check your by-laws before buying hardware.

Installing a Gate Control System in Australia: What to Check

• Power. Any new 240V circuit or fixed mains wiring must be installed by a licensed electrician. Low-voltage (24V) connections and solar kits are commonly installed by confident DIYers.

• Signal at the gate. Strong Wi-Fi or mobile coverage at the house does not guarantee coverage at the gate. Check it at the gate before choosing an app or 4G intercom.

• Climate. UV, heat, coastal salt and heavy rain all shorten the life of outdoor electronics. Sealed enclosures, stainless fixings and regular checks after storms help. See why electric gates stop working after rain and winter gate problems.

• Bushfire-prone areas. Know how your gate behaves when power is lost and how emergency services would get through. Requirements vary by state and council, so check with your local fire authority. Our bushfire-prone property gate guide covers the key questions.

• Existing gates. Most structurally sound gates can be automated without replacing the gate itself. Read can you motorise an existing gate before you buy.

Where Gate Control Technology Is Heading

The biggest shift is from standalone remotes towards connected control. App and 4G modules now let homeowners open the gate remotely, share temporary access and see an event history, features that used to be limited to commercial access control systems. Number plate recognition and camera analytics are moving from car parks into larger homes and rural properties. When a product is marketed as “AI” gate automation, it usually means camera-based detection of vehicles, plates or people, so judge it on what it actually does, how it handles visitors, and what happens when the internet or power drops out.

Frequently Asked Questions

What is the difference between a gate control system and a gate access control system?

A gate control system covers everything that makes the gate move and stop: the motor, control board, safety devices and power supply. Gate access control is the part that decides who can open it, such as remotes, keypads, intercoms, apps and card readers. Every automatic gate has both.

Are automatic gates secure?

An automatic gate is secure when it closes itself after each use, uses rolling-code remotes and individual keypad codes, and is locked or held closed by the motor. It is far less secure if auto-close is turned off, codes are widely shared or the manual release is left unlocked.

Can I add a keypad or intercom to my existing automatic gate?

Usually, yes. Most control boards accept an open signal from an extra receiver or a simple relay input, so keypads, intercoms and app modules can be added without replacing the motor. Check that the device is compatible with your control board and power supply before buying.

Do automatic gates work during a power outage?

Gates with battery backup keep running for a limited number of cycles during a blackout, and solar gates run from their battery anyway. Without backup, you will need the manual release key to open the gate by hand.

Do I need an electrician to install a gate control system?

You need a licensed electrician for any 240V mains wiring. Low-voltage wiring, solar kits and most accessories such as keypads and safety beams can be installed by a capable DIYer following the manufacturer’s instructions.

Can gate remotes be copied?

Fixed-code remotes can be copied relatively easily. Rolling-code remotes are much harder to clone because the code changes with every press, which is why they are the better choice for security.

Gatomate supplies swing and sliding gate opener kits, solar kits and access accessories such as keypads, photoelectric sensors, locks and long-range remotes. If you are not sure which combination suits your gate, call our team on 1800 571 110 or browse the full accessories range.