Skip to product information
1 of 5

Lexo Automation Powertech Mastiff 300 Swing Gate

Lexo Automation Powertech Mastiff 300 Swing Gate

Regular price $899.95
Regular price Sale price $899.95
Sale Sold out
Shipping calculated at checkout.
Quantity

Mastiff 300 Swing Gate Opener

The LEXO Automation Powertech Mastiff 300 is a compact 24V DC swing gate opener designed for smaller residential gates up to 3m per leaf or 300kg. With smooth worm-gear drive, die-cast aluminium housing and a built-in physical stopper, it provides reliable and quiet daily operation for standard home driveways and courtyard-style gates. Available as a Single Kit, Double Kit or Arm-Only, it offers dependable automation in a cost-effective format built for Australian conditions.

What’s Included:

Choose between a Single Kit, Double Kit or Arm Only.

Kits will include:

  • Lexo Automation Powertech Mastiff 300 Arm (single or double)
  • Mounting Hardware and Brackets
  • Manual Release Keys
  • Control Board in Enclosure 
  • 2 x Remotes
  • Installation User Manual

Arm only will not include Control Board in Enclosure or Remotes. 

Key Features:

  • Powerful 24 V DC Motor: Designed for consistent, reliable performance with a peak thrust of approximately 3,000 N.
  • Compact & Strong Design: Suitable for gates up to 3 m long or 300 kg per leaf — ideal for standard residential setups.
  • Die-Cast Aluminium Housing: Provides corrosion resistance and long-term durability outdoors.
  • Smooth & Quiet Operation: Worm-gear drive ensures stable motion with minimal vibration and noise.
  • Built-In Physical Stopper: Simplifies installation and prevents over-travel, protecting gate and mechanism.
  • Manual Key Release: Enables manual operation in case of power failure or emergency.
  • Pedestrian Mode: Allows partial gate opening for convenient foot or bike access.
  • Low-Voltage Safety: 24 V system for efficient, safe, low-energy operation.
  • Reliable Performance: Operates smoothly in temperatures from –20 °C to +50 °C.
  • Easy Installation & Setup: Adjustable brackets and clear travel settings for quick configuration.

Ideal Applications: 

  • Residential Driveways: Perfect for small to mid-sized gates at home entrances.
  • Urban & Suburban Properties: Compact motor fits narrow posts or confined installations.
  • Lightweight Gates: Ideal for aluminium, steel-frame, or picket-style swing gates.
  • Single or Double Gate Automation: Suitable for driveways or courtyard access.
  • Upgrade Projects: Great replacement for older or less efficient small-gate openers.

Technical Specifications: 

Max. Leaf Length 3m 
Max. Leaf Weight 300kg
Operation Stroke 350mm
Gear Type Worm Gear
Motor Type 24V DC
Input Power 220 - 240 VAC (50 Hz)
Max. Force 3000N
Absorption 4.2A
Power 144W
Duty Cycle 50%
IP Rating IPX4
Operating Temperature -20C to 50C
Built in Physical Stopper Yes
Opening Time Less then 14s
Manual Release Key
Dimensions 812 x 123 x 124mm
Warranty 2 Years Manufacturers Warranty

Downloads: 


View full details
Warning icon

This product contains a button or coin cell battery. To prevent possible SERIOUS INJURY or DEATH:

  • Keep new and used batteries out of reach of children at all times.
  • Do not use this product if the battery compartment is damaged or does not close securely.
  • Dispose of used batteries immediately and safely — even flat batteries can cause serious harm.
  • Do not ingest the battery. Chemical burn hazard.
  • If you suspect a battery has been swallowed or inserted, act immediately — severe or fatal injuries can occur within 2 hours.

Frequently Asked Questions

Is the remote pre-programmed or does it require setup before use?

Most remotes require programming to your opener before use. This process allows the remote to communicate securely with your specific garage or gate system.

If the product is listed as “compatible” rather than “genuine”, it will still need to be coded in the same way as your original remote.

Programming instructions are included with your order, and additional guides can be found on our
Programming Instructions page or by contacting our support team for assistance.

How much does shipping cost?

Retail customers enjoy free standard shipping Australia-wide on orders over $10. Orders are sent as tracked parcels via a range of trusted couriers, including Australia Post, CouriersPlease, and Aramex.

For faster delivery, an Express Shipping option is available for $9.95.

International shipping rates vary depending on the destination — standard shipping starts from $20, and all options include tracking for your peace of mind.

Wholesale customers are charged a flat rate of $14.95 for all orders, with tracking provided once despatched.

How long will it take for the order to arrive?

For the East Coast of Australia, standard delivery typically takes 3–5 business days.

For the
West Coast and Northern Territory, please allow 7–14 business days for standard delivery.

For more detailed information, please refer to our Shipping Policy.

What happens if I bought the wrong item?

If you think you have purchased the wrong item, please contact us and we will help start up the returns process and suggest correct replacement.

What happens if something is wrong with the remote?

Having Trouble Programming Your Remote?

Setting up your remote to your opener can sometimes be a little frustrating. If you’re having difficulty programming your remote,
get in touch with us — our team is happy to help troubleshoot the issue.

All products are covered by a manufacturer’s warranty, which protects against any faults that may occur during the production process.

For more information about our warranty process, please refer to our
Warranty Policy.