Borg BL3430 Mechanical Digital Gate Lock – Back-to-Back – Key Override & Code Lockout – Marine Grade – Black
The Borg BL3430DKOGATE is a fully mechanical marine grade digital gate lock with back-to-back keypads, a euro cylinder key override, and a code lockout / deadbolt function. Using the key not only provides manual access but also activates a code lockout that deadlocks the latch bolt – preventing the gate from being opened by keypad code until the key releases it.
The lock uses the forend fixing system, clamping onto the gate post with telescopic screws. It suits gate profiles from 30mm to 60mm square on standard fixings. The euro cylinder is not supplied and must be ordered separately. Fully mechanical, no batteries, anti-climb housing.
Code change uses the traditional Borg tumbler system (lock removal required). For on-gate code change with key override, see the BL3430DKOMGPROECP.
Usually same day if ordered before 11am AEST (excluding weekends and Qld public holidays)
These locks use a forend fixing system that clamps directly onto the gate post — no mortice cutting or door-edge drilling required. Designed for square aluminium or steel gate posts from 30–60mm. For profiles wider than 60mm, an optional XL latchbolt extension is available separately.
Marine grade quality keypads tested to 1,000 hours of salt spray exposure. Suitable for coastal, beachside, and outdoor gate installations.
This model uses a tumbler-based code system. To change the PIN, the lock must be removed from the gate. The keypad cover plate is removed and red coded / blue uncoded tumblers are rearranged using the supplied tweezers. For on-gate code change, see the BL3400MGPROECP (single-sided) or BL3430MGPROECP (back-to-back).
Both sides of the gate have a full keypad. The same PIN code operates both keypads. Entering the code is required to enter and exit — there is no free egress from inside.
This model includes a euro cylinder key override (cylinder not supplied). Using the key: (1) provides emergency key access, and (2) activates a code lockout — the key deadlocks the latch bolt, preventing gate operation by keypad code until the key releases it.
The inside keypad requires the correct PIN before the lever operates. Confirm this suits your application and complies with any applicable fire egress or building regulations before purchasing.
Entirely mechanical. No power source, no wiring, and no battery maintenance at any point.
Accepts one active PIN code at a time.
Key Features
- Back-to-back keypads – code required to enter and exit the gate.
- Euro cylinder key override – manual key access when code entry is not desired or possible.
- Code lockout / deadbolt – operating the key deadlocks the latch bolt preventing all keypad-based access until key-released.
- Forend fixing system – clamps to gate post, no mortice required.
- Anti-climb housing design.
- Marine grade quality keypads, 1,000 hour salt spray tested.
- Fully mechanical – no batteries, no wiring.
- Over 8,000 code combinations.
- Spring loaded adjustable latch bolt from 65mm to 80mm.
- Telescopic fixing screws – suits gate posts from 30mm to 60mm square.
- XL latchbolt available separately for profiles up to 120mm.
- Reversible on site.
What's in the Box
- Borg BL3430DKOGATE outside keypad unit with anti-climb housing
- Borg BL3430DKOGATE inside keypad unit
- Adjustable spring-loaded latch bolt (65–80mm projection)
- Telescopic fixing screws (suits 30–60mm gate posts)
- Allen key (for latch projection adjustment)
- Tweezers (for tumbler code change when lock is removed)
- Fixings and installation hardware
- Euro cylinder and keys are NOT supplied — order separately
Suitable Uses
- Secure storage areas, plant rooms, and restricted zones requiring BTB code access plus key supervisor override
- External gates where the gate must be capable of being deadlocked (keypad disabled) by an authorised keyholder
- Pool gates, marina facility gates, and port access requiring both keypad and key-based lockdown capability
Borg BL3100 / BL3400 / BL3430 Gate Lock Series – Full Product Family
All models are purpose-built gate locks for metal box-section gate frames. All are marine grade, salt-water tested, fully mechanical (no batteries), and finished in black.
MG = standard marine grade. MG Pro = Marine Grade Pro (316 SS internals, MG Pro 2 coating, 1,000hr salt spray). ECP = Easicode Pro on-gate code change. DKO = double key override with deadbolt/code lockout function. Euro cylinder not supplied on DKO and GATEK models.
Full Specifications
Dimensions
Frequently Asked Questions
How does the forend fixing system work?
The lock body sits on the face of the gate frame and clamps onto the gate post using telescopic fixing screws supplied. No drilling through the gate edge or mortice pocket is required. The latchbolt projects from the lock body and engages a strike on the gate post or adjacent frame. The latch projection is adjustable from 65mm to 80mm to suit different gate frame widths. For gate posts wider than 60mm, an optional XL latchbolt extension is available separately.
How does the DKO key override and code lockout work?
DKO stands for "Double Key Override." The euro cylinder (not supplied) fits into the lock body. Turning the key in one direction unlocks the gate by key without entering the code. Turning it further activates the code lockout / deadbolt: the latchbolt is deadlocked and the keypad is disabled — code entry will not open the gate until the key is turned to release the deadlock. This allows an authorised keyholder to fully lock down gate access. Source a standard euro profile cylinder from your locksmith, confirming the correct length for your gate post.
How do I change the PIN code?
The lock must be removed from the gate. Remove the 4 red screws, carefully lift the cover plate (springs attached), hold the C tumbler depressed, then use the supplied tweezers to reposition the red (coded) and blue (uncoded) tumblers. All square cut-outs must face outward. Test the new code before reinstalling. Codes are non-sequential — buttons can be pressed in any order. Spare tumblers allow code length to be adjusted from 3 to 7 digits.
My gate post is wider than 60mm — what do I do?
An optional XL latchbolt extension is available separately, extending the maximum gate post width to 120mm. Contact us or search "Borg XL latchbolt" to find the correct accessory for your gate profile. Always confirm the correct gate post width before ordering.
Is this lock suitable for a pool gate?
The lock's spring-loaded latch is self-latching on gate close, which aligns with pool safety self-latching requirements. However, confirm all pool gate safety compliance requirements with a licensed pool safety inspector before installation, as compliance encompasses more than just the lock (gate height, clearances, overall system). For the Queensland Pool Safety Standard specifically, confirm with your local inspector.
Additional Information
The euro cylinder must be sourced separately. Contact a locksmith to supply and fit a standard euro profile cylinder in the correct length for your gate post.
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation. The lock must not be dismantled.
What's In The Box – Borg BL3430DKOGATE
- Borg BL3430DKOGATE outside keypad unit with anti-climb housing
- Borg BL3430DKOGATE inside keypad unit
- Adjustable spring-loaded latch bolt (65–80mm projection)
- Telescopic fixing screws (suits 30–60mm gate posts)
- Allen key (for latch projection adjustment)
- Tweezers (for tumbler code change when lock is removed)
- Fixings and installation hardware
- Euro cylinder and keys are NOT supplied — order separately
Borg BL3400 / BL3100 Series – Dimensions
All BL3100 and BL3400 series locks use the same forend fixing system and adjustable latchbolt mechanism. Latchbolt projection adjustable 65–80mm. XL latchbolt available separately for gate posts wider than 60mm (up to 120mm).
Borg BL3400 / BL3100 Series – Product Brochure
Borg Locks Warranty – Australia
What is Covered
- Mechanical defects in materials and workmanship
- Defects arising under normal use and service conditions
- Repair or replacement of defective units at the discretion of the Australian distributor (LSC)
What is Not Covered
- Damage arising from misuse, vandalism, or abuse
- Damage resulting from improper installation
- Locks that have been dismantled — dismantling invalidates the warranty
- Normal wear and tear
- Cosmetic damage not affecting function
How a Warranty Claim Works
Warranty claims for Borg products in Australia are processed through LSC, the authorised Australian importer and distributor for Borg Locks. If the returned item is found by LSC to be defective, it will be repaired or replaced. Products must be returned to the LSC office with freight charges prepaid within the warranty period. A detailed assessment report is provided to the customer after examination.
Contact Terry’s Locksmiths first — we will assess the issue and manage the warranty process with LSC on your behalf. You do not need to contact LSC or Borg Locks UK directly.
Australian Consumer Law
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside — and does not limit — these statutory rights.
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