--- product_id: 296017003 title: "Mighty Mule Automatic Gate Lock (FM143) for Automatic Gate Openers, Black" brand: "mighty mule" price: "€ 377.04" currency: EUR in_stock: true url: https://www.desertcart.pt/products/296017003-mighty-mule-automatic-gate-lock-fm143-for-automatic-gate-openers store_origin: PT region: Portugal --- # Requires 4 AA batteries Secure up to 2500 lbs Easy DIY installation Mighty Mule Automatic Gate Lock (FM143) for Automatic Gate Openers, Black **Brand:** mighty mule **Price:** € 377.04 **Availability:** ✅ In Stock ## Summary > 🔑 Lock in your peace of mind! ## Quick Answers - **What is this?** Mighty Mule Automatic Gate Lock (FM143) for Automatic Gate Openers, Black by mighty mule - **How much does it cost?** € 377.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/296017003-mighty-mule-automatic-gate-lock-fm143-for-automatic-gate-openers) ## Best For - mighty mule enthusiasts ## Why This Product - Trusted mighty mule brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **🐾 Versatile Use:** Perfect for gates over 8' long and animal enclosures. - • **📞 Reliable Support:** 12-month warranty and technical support for peace of mind. - • **🔐 Ultimate Security:** Protects your property with automatic locking. - • **🌪️ Weather-Resistant:** Designed for high wind areas and durable use. - • **🛠️ Hassle-Free Setup:** DIY installation means no waiting for professionals. ## Overview The Mighty Mule Automatic Gate Lock (FM143) is a robust security solution designed for single or dual gates, offering automatic locking and unlocking functionality. With a force resistance of up to 2500 lbs, it ensures stability and security. This lock is easy to install, compatible with various Mighty Mule and GTO/Pro openers, and comes with a 12-month warranty and technical support. ## Description Mighty Mule ## Features - The Automatic Gate Lock provides peace of mind and added security for your single or dual gate. Unlocks and locks automatically as the gate is activated. - Provides secure protection to withstand up to 2500 lbs. of force, providing stability and security. - Easy DIY (Do It Yourself) installation for your Mighty Mule Automatic Gate Opener system. - The Mighty Mule Automatic Gate Lock is compatible with all single and dual Mighty Mule or GTO/Pro Automatic Gate Swing Openers. - Backed by a 12 month Mighty Mule Warranty and Technical Support. ## Technical Specifications | Specification | Value | |---------------|-------| | Item weight | 2.7 Kilograms | | Installation type | Screw In | | Recommended uses for product | gates over 8' long, animal enclosures, high wind areas, use with fm700 & fm702 openers | | UPC | 728639275315 735090851132 090835071009 | | Global Trade Identification Number | 00090835071009 | | Manufacturer | Mighty Mule | | Part number | FM143 | | Item Weight | 2.7 Kilograms | | Product Dimensions | 31.12 x 18.42 x 6.35 cm; 2.7 kg | | Batteries | 4 AA batteries required. | | Item model number | FM143 | | Size | Pack of 1 | | Color | Black | | Style | Lock | | Item Package Quantity | 1 | | Included components | Lock with 10' of low voltage wire, Lock Receiver, Clevis Pin, Locking Cap, Lock Board Battery Lead Wires, White Wire, Lock Control Board, 2 Double Spade Tongue terminals, 6 Nylon Cable Ties, Wire Connector, Lock Keys, Lock Decal, Instruction Manual | | Batteries Included? | No | | Batteries Required? | No | | Battery Cell Type | Alkaline | ## Product Details - **Material:** Alloy Steel - **Brand:** Mighty Mule - **Color:** Black - **Exterior Finish:** Black - **Product Dimensions:** 12.25"L x 7.25"W x 2.5"H ## Images ![Mighty Mule Automatic Gate Lock (FM143) for Automatic Gate Openers, Black - Image 1](https://m.media-amazon.com/images/I/81pJXxnWvXL.jpg) ## Questions & Answers **Q: Does this lock work with the Mighty Mule FM-200 Gate Opener?** A: Yes it does. Simply hook it up to the lock+ and lock- on the control board. Disregard the additional circuit boards that are included. **Q: Will I have to have a positive stop installed on my slave gate to make the gate lock work on my dual gates?i can take most of the play out of the gate** A: Yes **Q: Can this be used with smart devices?** A: This lock is activated through the circuit board of the primary gate opener arm. If you have a gate opener that can be used with smart devices, this lock can be also. **Q: Will this lock work with FM350 gate opener?** A: The answer is Yes and No, please let me explain. Yes it will work with the FM350 but if you have a lightweight gate it may be impossible for it to latch regularly. This lock requires approximately 10lbs. of force to latch. There are other gate locks that better handle the slow speed and relative low force of the FM350. Try the Estate Swing automatic gate lock, available on Amazon, it requires only 1/2Lb. of force to latch and is great for both low mass gates and slower speed gates. ## Frequently Bought Together - Automatic Gate Lock (FM143) for Mighty Mule Automatic Gate Openers , Black - Mighty Mule Wireless Digital Keypad (FM137), Black, 25 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/296017003-mighty-mule-automatic-gate-lock-fm143-for-automatic-gate-openers](https://www.desertcart.pt/products/296017003-mighty-mule-automatic-gate-lock-fm143-for-automatic-gate-openers) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-11*