How to Choose the Right Opener for a Double Swing Gate

Knowing how to choose the right opener for a double swing gate comes down to six decisions: measuring each leaf individually for weight and length, matching the motor type to your pillar setup, choosing between electric and solar power, accounting for wind load and slope, verifying Australian safety compliance, and deciding whether to DIY or hire an electrician. Get any one of these wrong, and the system will underperform or fail prematurely.

Key facts at a glance:

• Each leaf of a double swing gate needs its own motor, sized independently

• Gatomate's electric double swing gate opener supports leaves up to 350kg and 3.5m wide per leaf

• Leaf length affects required torque as much as weight; a 3.5m leaf at 150kg needs more motor than a 2m leaf at 200kg

• Solar-powered double swing kits in Australia are viable for up to 50 daily cycles with the right panel and battery sizing

• AS/NZS 60335.2.103 compliance is mandatory for all automatic gate systems installed in Australia
  

What Is a Double Swing Gate Opener?

A double swing gate opener is an automated system that drives two gate leaves simultaneously, one on each side of a central driveway opening. 

Each leaf has its own dedicated motor, and a shared control board synchronises both motors to open and close in sequence or together. This configuration is the most common choice for residential driveways in Australia, where a wide, elegant entrance is the priority.

Unlike a single-gate opener that powers one leaf, double-swing gate opener Australia kits include two complete motor units, mounting hardware for both pillars, a single control box, and paired remotes. 

The two motors must be rated to match each leaf individually, which is why the selection process is more involved than for a single gate. 

Understanding this from the start makes choosing the right opener for a double swing gate far simpler.

Step 1: Measure Each Gate Leaf Individually

The most important step in choosing the right opener for a double swing gate is to measure both leaves separately before considering any product. 

Never assume both leaves are identical in weight or length. On many Australian driveways, one leaf is heavier due to an integrated intercom panel, an access keypad, or uneven material distribution. 

The motor for each leaf must be matched to that individual leaf, not to the average of both.

Estimating Gate Weight Without a Trade Scale

You can estimate your gate weight by calculating the material volume and density:

• Steel: 7.85kg per litre

• Aluminium: 2.7kg per litre

• Hardwood: 700 to 900kg per cubic metre

• Softwood: 400 to 600kg per cubic metre

For a steel tube gate measuring 3m by 1.5m, expect a weight of 80-110kg. Always add a 20% safety margin when choosing a motor for your double swing gate opener.

Why Leaf Length Matters as Much as Weight

A longer leaf acts as a longer lever, requiring the motor to apply more torque to manage the gate. 

A 3m leaf at 120kg often requires more torque than a 2m leaf at 180kg due to this leverage. This is the most common mistake when choosing a dual swing gate opener in Australia. 

Always factor in both weight and length, using manufacturer charts as your primary reference for every selection.

Step 2: Match the Motor Type to Your Gate and Pillars

Once you have both leaf measurements, the next step in choosing the right opener for a double-swing gate is selecting the appropriate motor mechanism.

There are three main types used in Australian residential and commercial applications. The right choice depends on your pillar width, the space available behind each leaf, and whether your gate swings inward or outward.

Linear (Ram) Actuators

Linear actuators extend and retract a stainless steel arm to move the gate leaf through its arc. They are the most common choice in Australia for residential and commercial double swing gate opener installations because they provide high torque, reliable performance, and simple mounting. 

Gatomate double-swing gate opener kits feature telescopic linear actuators with copper worm gears for quiet, durable operation. 

These units suit most standard brick or concrete pillars and work for both inward- and outward-opening gates.

Articulated Arm Motors

Articulated arm motors use a folding two-part arm that mimics a human pushing a gate. These are the preferred option for gates mounted in the centre of a pillar face, rising hinge gates, or any installation where the pillar geometry does not accommodate a straight linear arm. 

Because they exert less stress on the hinge point, they are an excellent choice for heavy timber gates on aging pillars. 

The main trade-off is that these motors require more clearance behind the gate leaf when the gate is fully open.

Underground Motors

Underground motors are buried beneath the hinge point and drive the gate using a rotating pivot mechanism. 

This keeps the automation system invisible from outside the property. They are the premium aesthetic choice for architectural driveways and heritage properties where a surface-mounted motor would be visually intrusive. 

While they suit flat and well-drained sites in Australia, installations in flood-prone areas or locations with a high water table require sealed housings and professional drainage planning to prevent water damage to the system.

Step 3: Decide Between Electric and Solar Power

Choosing the right power supply is a key step in selecting a double-swing gate opener. Australia's vast rural landscape and high solar irradiance make this decision particularly important. Both systems are highly reliable when correctly sized for your specific site.

When Mains Power Makes Sense

Mains power is the ideal choice if you already have a 240V circuit at the gate, expect more than 50 cycles per day, or have a shaded site that limits solar potential. It is also the best option for high-traffic commercial properties where consistent power is critical. 

Mains systems use an AC-to-DC adapter and do not rely on battery power, making them easier to pair with intercoms, keypads, and other constant-draw accessories.

When Solar Makes Sense

Solar is the better choice for driveways without nearby power, especially on rural properties where trenching cables would cost thousands of dollars. 

Solar kits pair a photovoltaic panel with a battery to store power for nighttime and overcast days. They work reliably across Australia year-round as long as the panel is sized correctly for your location.

Sizing Your Solar Panel and Battery for Daily Use

Correct solar sizing prevents flat-battery failures, which account for the majority of solar gate complaints in Australia.

Step 4: Account for Wind, Slope and Site Conditions

Site conditions are the most overlooked factor when choosing an opener for a double swing gate. A motor that performs well on a sheltered suburban block may fail on an exposed hilltop or coastal property. Accounting for these environmental factors early on will save you from expensive upgrades later.

Wind Load on Solid-Panel Gates

A solid gate acts like a sail. A 3m solid steel gate in a 60km/h wind experiences a lateral force equivalent to an additional 30 to 50kg of load. 

For properties in coastal or wind-prone regions, choose a motor with at least 30% more capacity than your gate's weight suggests. Alternatively, consider using slatted or grilled panels, which significantly reduce wind resistance.

Sloped or Uneven Driveways

Slope creates an asymmetric load on each gate leaf through its opening arc. A gate swinging outward onto a downward slope accelerates under gravity and can reach the end of its travel faster than the control board expects, causing a stall fault. 

A gate swinging uphill experiences additional gravitational resistance, increasing motor load throughout the stroke. 

For sloped sites, use a motor rated at least 30% above the gate weight calculation, and confirm the actuator bracket geometry with the manufacturer before ordering. Choosing the right opener for heavy gates involves detailed slope compensation.

Step 5: Check Safety Features and Australian Compliance

Every automated gate in Australia must comply with AS/NZS 60335.2.103, which mandates safety measures to prevent entrapment and crush injuries. Verifying this compliance is non-negotiable. Which means non-compliant gates cannot be legally installed and may void your property insurance in the event of an accident.

Obstacle Detection, Auto-Reverse, and Photocells

Compliant systems must include obstacle detection and an auto-reverse function that stops and reverses the gate upon meeting resistance. 

Most quality kits include this as standard via motor current sensing. For added protection, install photocells (PE beams) across the opening. 

These force the gate to stop and reverse immediately if the beam is broken. Photocells are strongly recommended for any property with children, pets, or regular pedestrian traffic.

Understanding AS/NZS 60335.2.103

The standard specifies entrapment force limits, manual release requirements, and necessary safety edge configurations. Reputable suppliers will explicitly state compliance in their product documentation. 

When reviewing a potential gate opener, always check the specification sheet for this standard. If you do not see it listed, contact the supplier directly to confirm before making your purchase.

Step 6: Decide Between a DIY Kit and a Professional Install

The final step is choosing between a DIY installation and a professional service. This decision impacts your total cost and the long-term reliability of your system. While a competent homeowner can often install the mechanical components of a gate opener, all 240V mains electrical wiring must be performed by a licensed electrician to ensure safety, legal compliance, and insurance validity. Unlicensed electrical work in Australia is illegal and carries severe penalties, including heavy fines and potential insurance voidance.

What's Typically Included in a DIY Double Swing Kit

A quality DIY double swing gate opener kit includes everything needed to automate your gate leaves:

• Two 24V DC motor units: each with mounting brackets for each leaf.
  

• Central control board: Houses the AC-to-DC transformer and logic controller.
  

• Remote controls: Typically two to five units (most boards support up to 120 remotes).
  

• Safety features: Built-in obstacle detection and auto-stop functionality.
  

• Installation materials: Includes the wiring loom and a comprehensive manual with diagrams.
  

• Solar options: Solar kits include a dedicated photovoltaic panel and battery system.

Best automatic gate opener in Australia range includes both electric and solar DIY double swing kits, and their solar double swing gate opener kit handles leaves up to 350kg and 3.5m per side.

When You Should Still Call an Electrician or Installer

An electrician is required for any gate opener that requires a 240V hardwired circuit, whether mains-powered or on a solar system where the transformer plugs into the building wiring. In Australia, it is illegal to perform this electrical work without a license.

You should hire a professional installer if:

• Pillars are not square: Incorrect alignment will cause motor strain and premature failure.

• Gate weight is high: Gates exceeding 250kg per leaf require precise load calculations and heavy-duty hardware.

• The site is challenging: Significant driveway slopes or uneven ground require specialised geometry and mounting expertise.

• The property is commercial: High daily cycle counts and safety liability requirements necessitate professional-grade installation and compliance certification.

For standard residential swing gates on flat or gently sloped driveways, a DIY kit is a genuine and well-supported option. If you need guidance, Gatomate offers phone and online support at 1800 571 110.

Common Mistakes When Choosing a Double Swing Gate Opener

Avoid these frequent errors to ensure your system performs reliably:

• Sizing by weight only: Always factor in leaf length. A longer gate acts as a massive lever, requiring significantly more torque than a short, heavy one.

• Buying two single-leaf motors: Never use two separate motors; you need a synchronised control board to ensure both leaves operate in unison.

• Ignoring wind loads: Coastal or elevated sites experience high wind resistance. A motor rated only for weight will likely struggle or fail in these conditions.

• Skipping photocells: Never rely on motor current sensing alone. Photocells are essential for safely detecting pedestrians, children, and pets.

• Under-sizing solar batteries: A battery sized for average weather will fail during prolonged cloud cover. Always size for your region’s worst-case overcast period.

Closing Thoughts

Choosing the right opener for a double swing gate is a six-step process that requires accurate measurements, an honest site assessment, and an understanding of which motor type suits your pillar geometry. 

Our range of double swing gate opener kits covers the full spectrum of Australian residential use from lightweight aluminium gates to heavy hardwood and steel designs, with both electric and solar power options. Each kit is designed to AS/NZS 60335.2.103 safety requirements and includes full DIY support.

If your gate is heavier than 200kg per leaf, significantly sloped, or located in a high-wind area, choose the right gate opener motor for heavy gates before making your final selection. 

Getting the sizing right the first time saves both money and the frustration of a motor that gives up under Australian conditions.

Frequently Asked Questions on Choosing the Right Opener for a Double Swing Gate

Is a solar or electric opener better for a double swing gate?

Solar suits remote driveways without mains power. Electric suits high-cycle or shaded sites. Both work reliably when correctly sized.

How much weight can a double swing gate opener handle per leaf?

Most residential double-swing openers handle 150-350kg per leaf. Always match the motor rating to each individual leaf weight, not the combined total.

Can I install a double swing gate opener myself, or do I need an electrician?

The 24V DC motor components are DIY-safe. Any 240V mains wiring connection requires a licensed electrician under Australian law.

Should I choose a double swing gate or a sliding gate for my driveway?

Swing gates suit flat driveways with adequate clearance. Sliding gates are better for sloped driveways or sites with limited space behind the gate.

What's the difference between a single and a double swing gate opener?

A single swing gate opener drives one leaf. A double-swing kit drives two leaves via a shared control board that synchronises both motors.

What is the typical leaf length a double swing gate opener can handle?

Most residential double swing motors handle up to 3.5m per leaf. Heavy-duty commercial units extend to 5-7m per leaf in some configurations.

How do I know if my pillars are strong enough for a double swing gate opener?

Pillars should be at least 300mm wide and set in concrete footings. Hollow or mortar-only pillars may need reinforcing before motor installation.

Do both motors in a double swing opener open at the same time?

Most kits open one leaf first as a safety measure, then the second follows. Simultaneous or sequential timing is adjustable on most control boards.