McGrath ULTRA-SECUA Dual Unlock Smart Lock – Screen Door
The McGrath ULTRA-SECUA Dual Unlock Smart Lock is a purpose-designed digital security lock for hinged screen doors. It provides keyless entry using PIN codes, RFID access cards or tags, and Bluetooth-enabled eKeys via the McGrath Locks App, with a mechanical key override for backup entry.
Supplied with a mortice lock and engineered for retrofit installation, the ULTRA-SECUA suits most hinged screen doors, including triple-locking designs. The Dual Unlock configuration adds an additional layer of security by requiring coordinated unlocking actions, making it suitable for higher-security residential and light-commercial applications.
Usually same day if ordered before 11am AEST (excluding weekends and Qld public holidays)
Dual Unlock allows your security screen door and main door to unlock together with a single action. For a clear, plain-English explanation of how it works and when it makes sense, read our guide: What Is Dual Unlock and How Does It Work?
Key Features
- 4-in-1 access methods: keypad PIN, RFID cards/tags, Bluetooth eKeys, and mechanical key override.
- Dual Unlock security design for enhanced protection on screen door installations.
- Supplied with mortice lock and strike plate for hinged screen doors.
- Designed to prevent tampering with the internal handle through fly screens.
- Bluetooth operation as standard, with optional Wi-Fi gateway support.
- Audit trail available in the McGrath Locks App.
- Passage mode for leaving the screen door unlocked when required.
- IP66 rated external housing for outdoor environments.
- Australian designed and owned.
Access Features
Battery, Power & Backup Access
- Powered by 2 × 3V lithium batteries (included).
- Typical battery life of 3–4 years under normal residential use.
- Low-battery alerts provided in the app and audibly at the lock.
- Mechanical key override ensures access even if batteries are depleted.
This smart lock does not include native Wi-Fi connectivity. Remote access and management features are available only when the lock is paired with a compatible McGrath Locks gateway. When a gateway is installed, users can remotely unlock the door, issue or revoke access credentials, and view access activity through the McGrath Locks App from anywhere with an internet connection. For a detailed explanation of gateway types, capabilities, and selection guidance, see Differences Between McGrath G2, G3, G4 and G5 Gateways .
Installation & Compatibility
- Designed for hinged screen doors.
- Compatible with most screen door mortice locks including Whitco, Austral, Doric, and Lockwood.
- Field-changeable handing.
- For sliding screen doors, consultation with a McGrath Preferred Retailer or Installer is recommended.
Finish & Dimensions
- Finish: Matt Black.
- Outside lock case dimensions: 295 mm (H) × 42 mm (W) × 24 mm (D).
View the non-Dual-Unlock version here: McGrath ULTRA-SECUA Digital Security Screen Door Smart Lock
The McGrath Locks mobile app is hosted on Australian-based servers and operates under Australian data jurisdiction. User data, access credentials, and system records are not hosted in overseas or opaque jurisdictions, addressing common concerns around offshore data storage and security.
McGrath smart locks are backed by long-established industry partners and supported locally. To learn more about why we’re confident backing McGrath smart locks long-term, read: Why Terry’s Locksmiths, LSC & McGrath Locks Give Long-Term Confidence
What’s In The Box
- Exterior lock assembly
- Interior lock assembly
- Mortice lock with strike plate
- Installation guide
- Drill positioning template
- 2 × backup mechanical keys
- 2 × RFID access tags
- Mounting screws
- Mini security screwdriver
Warranty
This product is covered by the manufacturer’s warranty provided by McGrath Locks. Warranty terms, conditions, and coverage periods may vary by product.
For full and current warranty details, please refer to the official McGrath Locks warranty page:
McGrath Locks – Warranty Information
It can be overwhelming with all the choices out there. We can help! We are experts with decades of experience in fitting locks of all types, not just Smart Locks. It is a free service we offer, and with just some photos and a few minutes of your time you can get expert advice and product recommendations tailored precisely to suit your needs.
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