Lawn owners love to have robot lawnmowers to automate lawnmowing and save themselves from intense labour and regular maintenance.
But what they hate about them is the perimeter wire that is installed to keep the mower within the lawn boundaries. The reasons are complex installation, wire breakage, lack of flexibility, signal interference, safety concerns, etc.
Fortunately, the latest robot lawn mowers do not need perimeter wires, and they can work flawlessly without them. They are equipped with advanced navigation technologies that don't require any physical wire.
Let's see some incredible mowers and help you select the best robot lawn mower without a perimeter wire for your property.
1) The Navimow i2 AWD—Best for Small Lawns
The Navimow i2 AWD series is for small to medium lawns up to 0.25 acres. There are two models available. The i206 covers lawns up to 0.15 acres, while the i210 is for lawns up to 0.25 acres. It's an affordable, user-friendly, and compact robot lawnmower equipped with incredible features.
Navigation Tech: How It Works Wire-Free
The i2 AWD series uses EFLS™ Network RTK. It does not need any wires, antennas, or base stations.
It's a network-based GNSS positioning service that offers centimetre-level accuracy. It accesses signals via internet connectivity, which makes everything hassle-free. Just connect the mower to the application, and it's ready to work.
It works in constantly changing conditions. It frees you from the geographical constraints and infrastructure limitations. Thus, even if there is a significant change in the lawn, the mower will adapt in no time.
It's compatible with multiple certified Network RTK providers. The mower connects to the nearest and strongest signal source and ensures optimal coverage, reliability, and accuracy.
Along with that, it also combines vision navigation technology. With the help of cameras, it captures the nearby objects, lawn items, trees, and everything to navigate precisely in the lawn.
Terrain Handling
The i2 AWD features an All-Wheel Drive (AWD) system, making it perfect for all kinds of terrain. It has three wheels, and all of them are powered so that the mower can work on bumps, dips, uneven stones, root-covered terrain, etc.
It uses an on-demand All-Wheel Drive. The rear wheel activates when needed and conserves energy. It extends the runtime by up to 30% and mows more.
With the 9.8-inch off-road wheels and patented Traction Control System, it even maintains enough traction on wet lawns. It does not skid or dig into the ground and mows while keeping the turf safe.
The mower is capable of working on slopes and hills. It handles slopes up to 45% (24⁰). It can do lateral, horizontal, and diagonal movements on the slope. It can even do in-place hill turns with the Xero-Turn™ technology that allows the mower to make 180⁰ turns without damaging the turf. That said, the mower can work in tight areas, narrow pathways, and hidden corners.
Cutting Performance
The mower has one disc with five blades. It finely cuts grass tips and offers an aesthetic appeal. You can adjust the height from 2 to 3.6 inches, which is perfect for small lawns.
The i206 AWD has a 2.55Ah battery that takes 60 minutes to charge and delivers 60 minutes of continuous use. It can mow 0.03 acres per charge. The i210 AWD has a 5.1Ah battery that needs 120 minutes of recharging to work for 120 minutes. It can mow an area of 0.06 acres per charge.
You can also go to the next level by creating attractive doodles on your lawn. Choose from 29 preset patterns and customizable letters and numbers to give your lawn a distinct appearance.
Obstacle Detection
Its VisionFence™ offers AI-powered obstacle detection. By using a 140° RGB Camera, it detects 150+ obstacles. It detects pets, tools, lawn objects, small items, and everyday obstacles. While mowing, it maintains a 1-meter buffer for safety and reroutes within 0.1 seconds.
2) The Navimow i2 LiDAR—Best for Small and Complex Lawns
The Navimow i2 LiDAR is specially designed for small to medium lawns with too many obstacles. With its advanced high-res solid-state LiDAR, it navigates complex lawns irrespective of the obstacles and offers incredible accuracy. Its latest model, the i215 LiDAR, can mow lawns up to 0.37 acres.
Navigation Tech: How It Works Wire-Free
The i2 LiDAR combines two technologies: High-res solid-state LiDAR and Vision. It understands your lawn automatically. Just drop it, and it is ready to mow. There is no need to walk along with it or install any wires or antennas.
Once you connect it to the application, it automatically starts mapping your whole lawn. It's an autonomous-driving robot mower that scans approximately 200,000 points per second. It creates an extremely rich map with almost no blind spots. It considers every corner, edge, flowerbed, or contour.
You can also finely edit the real-scene maps with the GeoSketch™ and edit boundaries, edges, etc. You can mow up to 20 zones with the mower and set a separate schedule and mowing height for each.
It does not depend on satellites and works with its own reliable navigation network. That said, it can work in any kind of challenging and changing environment. It has a 230ft long range and 4X higher resolution for sharper and more detailed images.
As it uses a solid-state LiDAR, you don't have to worry about fragile rotating parts, scratches, and other issues. It is designed to last for a long time and sustain vibrations and scratches.
Terrain Handling
The mower works on different terrains with its off-road wheels and Electronic Stability Control (ECS). The ECS regulates wheel motion to ensure a stable center of gravity according to the terrain and slope.
It handles slopes up to 45% (24⁰), which is perfect for lawns with hills.
It can work in narrow paths up to 28 inches. It navigates precisely under trees without dropouts. It mows almost every part and terrain of your lawn.
Cutting Performance
It can handle lawns up to 0.37 acres and can mow the area within 16 hours. It has a 7.65Ah battery, which needs 130 minutes of recharging and offers a mowing time of 160 minutes. It can mow 0.105 acres per charge.
You can adjust the height from 2 to 4 inches. By using the low-cutting kit, it's possible to adjust the deck from 0.8 to 2.8 inches.
It has an 8.66-inch-wide deck. There is one disc with six blades to finely cut the grass tips and give your lawn a professional makeover.
Obstacle Detection
With the help of LiDAR and Vision detection technologies, the mower is capable of detecting 200+ obstacles in real-time. It detects objects with 0.4-inch precision.
Whether it is a small lawn object, a large lawn item, a person, an animal, or even a suspended object like a table, it detects everything. If the suspended object has enough clearance, it mows under it.
It detects over 20 animal types from a distance of 3.3ft. It slows down automatically and maintains a safe distance while mowing.
3) The Navimow H2—Best for Medium Lawns
The Navimow H2 series is the best option for medium and complex lawns. It's the master of every scene and ensures absolute precision and reliability. What sets it apart from other mowers is its AI triple fusion system, which makes navigation extremely accurate.
Navigation Tech: How It Works Wire-Free
It's engineered for complex yards. No matter how many obstacles you have in the lawn, it knows how to mow safely without leaving any area.
It has the EFLS™ LiDAR⁺ AI Triple Fusion System, which combines three technologies: LiDAR, Network RTK, and Vision. That's the reason the mower navigates with incredible precision without the need for wires, antennas, and base stations.
It's capable of working in any kind of scene. The LiDAR technology scans your whole yard at 200,000 points per second. It creates a rich and detailed 3D point cloud with no blind spots. It captures every edge, corner, contour, and object.
Using the LiDAR and Vision technologies, the mower sees the lawn just like your eyes. It covers everything in a real and interactive map that you can edit for unparalleled accuracy.
The H2 series fuses LiDAR's spatial awareness of your lawn and Network RTK's satellite precision. Both ensure optimal accuracy and reliability in determining the mower's position in the lawn. It switches between the positioning modes within 20ms to offer unmatched performance. That's the reason it works seamlessly in open areas, under dense trees, narrow paths, and even in total darkness.
Terrain Handling
The mower works in almost all terrains. With its off-road wheels, it maintains enough traction on the ground.
The Terrain Adapt is a distinct feature that analyzes your lawn in 3D and intelligently divides your lawn into optimized zones and plans the ideal route.
It has Electronic Stability Control (ECS), which regulates the wheels during turns and maintains the center of gravity. That's why it can work on slopes up to 45% (24⁰).
Cutting Performance
The H2 series currently has two mowers. The H210 is suitable for lawns up to 0.25 acres. It can mow the whole area within 7.66 hours. It has a battery capacity of 5.1Ah, which needs 70 minutes of recharging to work for 110 minutes without interruption. It can mow an area of 0.086 acres per charge.
The H220 is for lawns up to 0.5 acres. It can mow the whole lawn in 12.26 hours. It has a 10Ah battery that needs 120 minutes of recharging to work for 220 minutes continuously. It can mow 0.22 per charge.
Both mowers have one disc and six blades. They can precisely cut the lawn. The anti-clogging disc prevents the clogging of the mower and keeps the deck clean. You can adjust the height from 2 to 4 inches, and if you install the low-cutting kit, the height can be adjusted between 0.8 and 2.8 inches.
The best thing about these mowers is the motor with 100W peak power. It offers enough power to cut dense and thick grass without any hassle. You can set the desired schedule and mowing height for up to 30 areas.
It also has the EdgeSense™, which allows the mower to cut edges up to 2 inches from walls and fences. It can also do zero-edge cutting across the borders and transitions. Simply put, you can enjoy the artisan-level mowing without any effort.
Obstacle Detection
The obstacle detection of the H2 series is superior to that of normal robot mowers. Its VisionFence™ uses LiDAR and Vision technologies to detect and identify objects.
Due to the advanced technology, it can even detect tiny objects in your lawn like hoses and toys. It detects animals, persons, lawn objects, and other things with 0.4-inch precision.
It also identifies suspended objects. It calculates the clearance, and if it is enough, it mows under it. Which means it can mow under a table, trampoline, hammock, etc.
It can identify 20 animal types. When an animal is detected, it slows down and maintains a safe distance.
4) The Navimow X4—Best for Large Lawns
The Navimow X4 series is packed with exceptional features and perfectly designed for large lawns up to 1.5 acres. With this mower, you can automate lawn mowing completely. It conquers all types of terrains and mows all types of grasses. It works without wires and uses advanced navigation technologies.
Navigation Tech: How It Works Wire-Free
The mower uses multiple navigation technologies and techniques to navigate precisely. Firstly, it works on the Tri-frequency Network RTK. It provides high-accuracy GPS positioning without any wires or antennas. Just connect the mower to the application, and it is ready to navigate.
It works well in constantly changing situations. There is no need to worry about geographical constraints and infrastructure limitations. Even if there is a wide-open field, the mower knows its exact position.
It's compatible with multiple certified Network RTK providers. It automatically connects to the nearest and strongest signal source and ensures optimal coverage, reliability, and accuracy. The mower navigates with inch-level accuracy.
It's equipped with a 360° RGB Camera, which captures images around the lawn and gives more details to navigate with perfection. The 360⁰ VSLAM helps the mower understand the lawn better.
Visual Inertial Odometry combines data from the camera and sensors to estimate the mower's 3D position. It allows the mower to mow complex areas and navigate lawns safely while avoiding objects.
All these technologies and techniques make the Navimow X4 superior in navigation. It moves around large lawns with extreme precision.
Terrain Handling
The Navimow X4 is the master of all terrains. It's equipped with the All-Wheel Drive (AWD) system, which powers all wheels of the mower. That's the reason it can work on pitted surfaces, waterlogged lawns, gravel paths, potholes, border curbs, and almost all terrains where other mowers fail.
It has rugged off-road wheels and dual suspensions to work on any kind of surface. Because of the 5:5 balanced center of gravity distribution and patented Traction Control System (TCS), it mows on slopes up to 84% (40⁰). It maintains enough traction and stability and prevents slipping. It's the best lawn mower for steep slopes.
It dominates all terrains. There is virtually no limit.
Cutting Performance
The mower is engineered to handle any grass type and situation. It has two 180W, powerful cutting motors that can cut thick, dense, and long grass without any hassle.
Its dual-disc system contains 0.04-inch-thick blades that precisely and cleanly cut thick grass. It also has a Smart Cutting Algorithm that automatically detects and lifts blades when handling challenging, tall, and tough grass.
You can adjust the size of the mower from 0.75 to 4 inches, which means it is perfect for any kind of grass and works in all seasons. Even if the lawn is uneven, its Adaptive Blade System keeps the blades floating over uneven ground to minimize scraping and lawn damage.
The Navimow X4 series has two mowers. The X430 is for lawns up to 1 acre. It mows the area in 15 hours. The second one is X450, which is suitable for lawns up to 1.5 acres, and it mows the whole yard in 23 hours. Both mowers contain a 12.8 Ah battery, which requires 90 minutes of charging to work for 110 minutes continuously.
The X4 series is incredibly efficient. Because of the 17-inch-wide cutting deck, up to 2.7 ft/sec high speed, and 224W fast-charging, your lawn is mowed faster than average mowers. In minimal time, it offers artisan-level mowing. You can set up to 120 zones, including mowing and non-mowing areas.
Last but not least is the EdgeSense™, which takes edge cutting to the next level. The mower mows within 2 inches of the walls and fences. It also has the ride-on mode for zero-distance cutting around boundaries and transitions. It can handle a transition elevation up to 1.2 inches.
Obstacle Detection
The obstacle detection of the X4 series is exceptional. It has AI-powered 360⁰ VisionFence™ and Animal Protection.
Its panoramic obstacle detection system detects objects in a 16-foot range. It maintains a 3.3ft safe distance and reroutes within 0.1 seconds. It detects
It detects animals, everyday obstacles, lawn items, and around 200+ obstacles. The mower also works at night. It navigates in low-light conditions and detects obstacles at a distance of 5.9ft.
The Xero-Turn™
The Xero-Turn™ of the mower sets it apart from normal robot mowers. With this feature, the mower can make a 360⁰ turn like a zero-turn mower. However, it does not damage the grass in any way. It keeps the speed and traction in control to ensure no turf damage.
The front wheels of the mower have zero-turn steering. It automatically switches between the zero-turn and automotive-grade Ackermann steering. Thus, the mower can work in tight and narrow areas.
5) The Navimow Terranox—Best for Commercial Lawns
The Navimow Terranox is the commercial lawnmower series. It's engineered to mow large lawns and make lawnmowing hassle free. With the latest navigation system, it mows large lawns easily.
Navigation Tech: How It Works Wire-Free
The Navimow Terranox navigates large lawns without any wires or antennas. It relies on satellite signals, vision, and VIO (Visual Inertial Odometry).
It's capable of mowing lawns up to 6 acres. But that's not the limit for its navigation. With its fleet management, you can add hundreds of mowers to the fleet and mow hundreds of acres. That said, the mower knows its location in extremely large lawns and navigates with utmost precision.
The Network RTK offers centimetre-level accuracy. The mower knows its GPS position in the lawn by working with multiple certified Network RTK providers. It connects to the nearest and strongest signal source and gets the precise location. It works in wide areas and in constantly changing locations. So, even if there are constant changes in the infrastructure, the mower navigates without any hassle.
The 360⁰ vision also assists the mower in navigation. Its camera-based VSLAM allows it to understand the lawn and objects around. On top of that, the data from cameras and sensors is processed through VIO, and the mower understands its positioning. Both these technologies help the mower to visualize the lawn and create a 3D map for precise navigation.
Terrain Handling
The Navimow Terranox is a commercial mower. It's designed to handle any kind of terrain. Firstly, it has the All-Wheel Drive (AWD) system and dual independent steering motors.
The mower works on any terrain, such as uneven lawns, vertical steps, bumps, potholes, etc. It mows on difficult surfaces where normal mowers fail.
It works on steep slopes in the lawn. It handles up to 84% (40⁰). The rugged off-road wheels, balance center of gravity, and suspension keep the mower stable on slopes. They also prevent turf damage.
Cutting Performance
Currently, there are two models. The CM120M1 is for lawns up to 3 acres. It has a runtime of 145 minutes and mows at a speed of 2mph. The CM240M1 mows lawns up to 6 acres. It has a runtime of 180 minutes and a speed of 2.2mph.
The mowers have dual cutting motors. Each has a disc with six blades. They can cut any kind of grass, be it thick, long, or dense, with perfection. You get a clean cut every time. It also has an anti-clogging disc that prevents the mower from getting clogged.
You can adjust the mower's height from 0.75 to 4 inches, and it works on all grass types. With this mower, you can maintain large commercial properties like golf courses, sports turfs, corporate campuses, etc.
Obstacle Detection
The commercial mower mows the lawn with extra safety. Its VisionFence™ detects 200+ obstacle types. It instantly detects obstacles and works in complex settings.
It uses a 360° RGB Camera and ToF. It detects and identifies objects in real-time. It detects animals, persons, lawn items, trees, flowerbeds, etc. It also detects suspended objects and mows under them if there is enough clearance.
Effortless Fleet Management
What makes Navimow Terranox incredible is its fleet management. Only one person can control hundreds of mowers via the app or web portal.
You can easily monitor the performance of each mower, assign tasks, edit maps, and control everything remotely. It reduces labour expenses and the cost of mowing large lawns to a great extent.
Final Words
Because of the advanced navigation technologies, you don't need to mess with perimeter wires. Most modern robot lawn mowers work without it and offer exceptional performance. We have shared some of the best robot lawn mowers without perimeter wire that are suitable for small, medium, large, and commercial lawns. Now you can safely say goodbye to perimeter wires and enjoy a perfectly cut lawn every day with no effort.