The FJDynamics FR4000 is a compact, commercial-grade autonomous robotic lawn mower engineered for large residential estates, sports fields, HOAs, and municipal turf management. Powered by industrial Real-Time Kinematic (RTK) positioning and an AI smart vision system, it operates within virtual boundaries without physical perimeter wires, delivering centimeter-level positioning accuracy across complex layouts. Key Technical Specifications Feature Specification Model FJDynamics FR4000 Smart Robotic Mower Navigation System Industrial RTK (Radio / Network) + Enhanced AI Vision (Stereo/RGB) Boundary Type Virtual Wire (Digital perimeter mapping via App) Cutting Width 255 mm (10 in) Cutting Height Range 10 mm – 50 mm / 20 mm – 60 mm (0.4 in – 2.4 in) Cutting Mechanism 6 pivoting stainless steel blades Coverage (Per Cycle) Up to 4,000 m² (~1.0 acre) Coverage (Multi-Day Max) Up to 10,000 m² (2.47 acres) within 72 hours Battery Capacity Dual 190 Wh lithium-ion batteries (380 Wh total) Runtime per Charge Up to 180 minutes (3 hours) Charge Time ~120 minutes Mowing Speed Range 0.3 m/s to 0.5 m/s (1.1 km/h – 1.8 km/h) Max Slope Gradient Up to 33° (65% grade) Dimensions (L × W × H) 645 × 444 × 420 mm (25.4 × 17.5 × 16.5 in) Unit Weight 13.3 kg (29.3 lbs) IP Rating Mower: IPX5 / Charging Station: IP65 / RTK Station: IP67 Sensors Stereo camera, RGB camera, bumper, lift, tilt, rain sensor Connectivity 4G, Wi-Fi, Bluetooth, Mobile App Core Systems & Architecture 1. Navigation & Boundary Management Dual-Layer Guidance: Combines dual-mode RTK (Radio and Network) with stereo optical cameras to preserve operational positioning under heavy tree coverage or near structures. Wireless Mapping: Configures multi-zone schedules, passage corridors, and restricted (no-go) areas directly via the FJD mobile application. Parallel Route Optimization: Plans systematic parallel cutting patterns to maximize coverage efficiency and minimize turf wear compared to random-bounce patterns. 2. Terrain & Incline Capabilities High-Slope Drive: Uses a rear-wheel-drive powertrain capable of traversing slopes up to 33° (65% grade). Low-Impact Footprint: A 13.3 kg gross weight minimizes soil compaction and turf tearing during tight turning maneuvers on incline surfaces. 3. Safety, Security & Weather Sensing Active Vision Obstacle Avoidance: Uses AI vision processing paired with a physical contact bumper to detect and route around static and dynamic obstacles. Rain Response Protocol: An integrated rain sensor triggers an automatic pause and routes the mower back to the charging dock upon detecting precipitation. Security Layer: Built-in PIN code authorization, lift/tilt alarm triggers, charging dock pairing, and GPS tracking prevent unauthorized removal. 4. Power & Fleet Control Auto & Portable Deployment: Supports standard auto-docking charge routines as well as manual "Drop & Run" deployment for remote zones lacking a dedicated charging dock. App Telemetry & OTA: Provides real-time progress monitoring, custom height schedules, edge-mowing modes, and Over-the-Air (OTA) firmware updating. Commercial Applications Large Residential Estates & Communities: HOA common grounds and multi-property lawn care. Sports & Training Grounds: Athletic practice fields and turf pitch management. Municipal & Corporate Landscapes: Parks, school campuses, resort lawns, and office parks. Golf Course Facilities: Practice green surrounds, tees, and clubhouse groundskeeping.