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Mighty Mule FM143 automatic gate lock delivers reliable automatic gate lock security with easy DIY gate lock installation, securing your single or dual gate every time it’s activated. Designed for you to enjoy peace of mind in high-wind areas and gates over 8 feet long, this gate lock accessory integrates seamlessly with existing Mighty Mule or Linear Pro openers.

• Unlocks and locks automatically when your gate opener is activated—no extra steps required.
• Works with all single and dual Mighty Mule and Linear Pro automatic gate swing openers for versatile compatibility.
• Provides maximum stability and security—ideal for gates over 8 feet long and high-wind environments.
• Comes with two keys for manual release of the gate lock whenever you need quick access.
• Easily wires directly into the gate opener’s control box for a straightforward DIY installation.
• Backed by a 12‑month Mighty Mule warranty and lifetime technical support for lasting reliability.

Installation Manual