{"product_id":"mighty-mule-driveway-vehicle-sensor-fm140-100-ft-magnetic-probe-12-ft-detection-zone-hardwired-black","title":"Mighty Mule Driveway Vehicle Sensor FM140 — 100 ft Magnetic Probe, 12 ft Detection Zone, Hardwired Black","description":"\u003cb\u003eThe Mighty Mule FM140 100 ft Driveway Vehicle Sensor is an underground magnetic probe that detects passing vehicles within a 12-foot sensing field to trigger automatic gate opening for exit without a remote.\u003c\/b\u003e\n\nThe FM140 is a hardwired, direct-burial vehicle sensor designed to add convenient, hands-free exit to compatible Mighty Mule automatic gate openers. It uses a buried wand and 100 feet of cable to sense the metal mass of cars, trucks, motorcycles, and other vehicles as they cross a 12-foot detection zone. Installed inside the property and wired to your gate control box, the sensor eliminates the need to press a remote when leaving and is compatible with both single and dual gate installations.\n\n\u003ch3\u003eHow does the FM140 detect vehicles and trigger the gate?\u003c\/h3\u003e\n\u003cp\u003eThe FM140 senses changes in the local magnetic field produced by moving metal. When a vehicle moves through its 12-foot detection band, the probe sends a signal through its cable to the gate control, which then activates the opener to allow exit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e12-foot magnetic detection zone registers passing metal mass.\u003c\/li\u003e\n  \u003cli\u003eDirect-burial probe buried near or alongside the driveway within 12 inches depth.\u003c\/li\u003e\n  \u003cli\u003eWires directly to the gate opener control box for immediate activation.\u003c\/li\u003e\n  \u003cli\u003eSuitable for cars, trucks, ATVs and motorcycles that cross the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere and how should I install the FM140 for reliable performance?\u003c\/h3\u003e\n\u003cp\u003ePosition the buried wand on the inside of your property next to the driveway so exiting vehicles pass through the sensing band. Trenched installation keeps the 100-foot cable protected; bury the probe no deeper than about 12 inches and run the cable to your gate opener control panel.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProbe depth: up to 12 inches underground for dependable detection.\u003c\/li\u003e\n  \u003cli\u003eCable length: 100 feet, allowing flexibility in probe placement 3–100 ft from the gate.\u003c\/li\u003e\n  \u003cli\u003eBest practice: install on the exit side of the gate for free exit without a remote.\u003c\/li\u003e\n  \u003cli\u003eWiring: connect directly to the control box following manufacturer wiring diagram.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the FM140 work with my gate and what installation options are available?\u003c\/h3\u003e\n\u003cp\u003eThe FM140 is compatible with Mighty Mule single and dual gate systems when the control board accepts a vehicle sensor input. It’s a DIY-friendly, wired option; alternate lengths and a wireless model exist if 100 feet or wired installation doesn’t suit your site.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with many Mighty Mule automatic gate openers for exit activation.\u003c\/li\u003e\n  \u003cli\u003eDIY installation possible for homeowners comfortable with trenching and basic wiring.\u003c\/li\u003e\n  \u003cli\u003eOther wired lengths available: 50 ft (FM138) and 150 ft (FM141).\u003c\/li\u003e\n  \u003cli\u003eWireless alternative: Mighty Mule FM130 for no direct-burial wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nThis sensor is ideal for property owners who want a simple, reliable way to exit without pressing a remote or stopping at the gate. If you have a gated driveway, a compatible Mighty Mule opener, and can trench a short run for the 100-foot cable, the FM140 adds convenient, automatic exit sensing for everyday vehicles without altering your gate hardware significantly. For sites that require a shorter or longer cable, or where trenching is impractical, consider the FM138, FM141, or the wireless FM130 alternative.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the FM140 be used with dual gate systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The FM140 works with both single and dual Mighty Mule gate openers when wired to the control box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How deep should the sensor probe be buried?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Bury the probe no more than 12 inches deep and run the 100-foot cable in a protected trench to the control panel.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mighty Mule","offers":[{"title":"Default Title","offer_id":67585198850233,"sku":"B0015RY44K","price":386.38,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/mighty-mule-front-view-probe-and-cable.jpg?v=1790469693","url":"https:\/\/redleafauto.ca\/products\/mighty-mule-driveway-vehicle-sensor-fm140-100-ft-magnetic-probe-12-ft-detection-zone-hardwired-black","provider":"Redleaf Auto","version":"1.0","type":"link"}