Robot Mower Installation Guide: Boundary Wire, RTK Antenna and Setup

Robot mowers use one of three navigation systems, and each installs differently:

• Boundary wire: a thin, low-voltage wire loop around the lawn edge carries a signal from the charging station, and the mower turns when it detects the wire. The Husqvarna Automower 430X Robot Mower uses this system, which keeps a steady signal under heavy shade.
• RTK satellite positioning: RTK (Real-Time Kinematic) corrects satellite positions with a nearby base station or a network service for accuracy within centimeters, so you draw a virtual boundary in the app instead of laying wire. Husqvarna's EPOS models such as the Husqvarna Automower 440iQ Robot Mower, the Mammotion LUBA 2 AWD 3000X Robot Mower and the Segway Navimow i210 AWD Robot Mower work this way, most adding cameras for obstacles.
• LiDAR and vision without RTK: laser and camera mapping, as on the ECOVACS GOAT A3000 LiDAR Robot Mower and Segway Navimow i215 LiDAR Robot Mower, needs no wire or antenna and suits yards where trees and houses block the sky.

The boundary wire vs RTK comparison helps you choose before you buy.

Start with a sketch of the lawn showing beds, trees, patios, play equipment, slopes, ponds, drop-offs and the nearest outdoor outlet. Then plan:

• Working area: total lawn square footage, which should sit comfortably under the mower's rated area. A robot rated for exactly your lawn size has no margin for slopes, complex shapes or fast spring growth.
• Zones: separate lawns, such as front and back, either connect through a passage the mower can drive or become separate zones you carry the mower between, depending on the model. The robot mower sizing for multiple zones covers the options.
• Passages: narrow strips beside the house or between beds need to meet the minimum passage width in the manual, and wire models often need a guide wire through them.
• No-go areas: ponds, pools, steep drop-offs, vegetable gardens and play areas get wire islands or app exclusion zones. Never rely on bump or camera detection alone near water or edges.
• Slopes: measure the steepest section in percent and compare it with the rating.

Before installation, mow the lawn with a regular mower, fill holes, and remove sticks and stones, so the wire sits at ground level and the first runs go smoothly.

Use this site's estimate: (perimeter of the lawn edge + 25 feet per island + a guide wire of half the lawn's length) x 1.1. The 25 feet per island covers the run out to a bed or tree and back, and the 10 percent extra covers corners, offsets from edges and spare for repairs.

Both are standard, and manuals from Husqvarna, WORX and others describe both. Staking uses plastic pegs to hold the wire tight at ground level. It is fast and easy to adjust, and grass typically grows over it within a few weeks. Space pegs closely enough that the wire cannot lift, closer on bumps and curves, and keep your regular mower and string trimmer high over it until it is covered. Burying places the wire a shallow depth below the surface, within the depth range your manual allows, using a flat spade or a lawn edger to cut a slit. It protects the wire from aerators, dethatchers and scarifiers, which cut staked wire easily.

Layout rules that prevent most problems:

• Keep the offset from edges the manual specifies: more space from walls, fences and raised beds, less next to a flush path the mower can drive over.
• Avoid sharp 90-degree corners; cut them at an angle so the mower does not get trapped.
• For an island around a tree or bed, run the wire out and back with the two wires laid side by side so their signals cancel along the approach.
• Join wire only with the manufacturer's gel-filled connectors, such as those in an Automower installation kit. Twisted and taped splices corrode and fail.

A guide wire is a separate wire run from the charging station out across the lawn to a far point on the boundary. Wire-based mowers follow it home to charge and use it to reach remote sections of the lawn through narrow passages, instead of wandering the perimeter. Lawns with a passage between zones, a long narrow shape or a station tucked in a corner benefit most.

Lay the guide wire in a line that avoids steep side slopes, keep it clear of the boundary wire by the distance the manual gives, and connect it at the station and the boundary loop exactly as shown. The wire estimate above allows half the lawn's length for it. RTK, LiDAR and vision models find their way home by map and do not need one.

• Level ground at the lawn edge, not at the bottom of a slope where water collects.
• Near a protected outdoor outlet, ideally GFCI, within reach of the low-voltage power cable. Keep the power supply off the ground and out of standing water.
• Clear approach: follow the manual's straight wire run and open space in front of and behind the station, so the mower docks reliably.
• Shade if possible. A shelter such as the Husqvarna Automower House for iQ Series for iQ models or the Segway Navimow Garage S for Navimow i-series shades the mower from sun and rain; check that any shelter does not block an RTK or satellite signal.
• Away from sprinkler heads, downspouts and places kids ride bikes.
• In Wi-Fi or cellular range for app control, and less visible from the street if theft is a concern.

The RTK reference antenna needs the widest possible view of open sky. Mount it high, on a roof edge, a tall fence post or the pole supplied with the kit, clear of walls, tall trees and metal roofing that block or reflect satellite signals. Keep it within the distance and power arrangement the manual specifies. A position with sky visible in every direction beats a convenient spot beside the house wall every time.

Some models skip the local antenna. The Segway Navimow i210 AWD Robot Mower and Mammotion LUBA 3 AWD 5000 Robot Mower can use network RTK, and the WORX Landroid Vision Cloud WR342 4WD Robot Mower uses cloud RTK, receiving corrections over a data connection. They still need a clear sky view over the lawn and reliable coverage.

If large parts of the lawn sit under dense tree canopy or tight against tall buildings, RTK can drop out there. That is where a wire model like the Husqvarna Automower 430X Robot Mower or a LiDAR model like the Segway Navimow i215 LiDAR Robot Mower tends to work better. The best robot mowers without boundary wire compares the wire-free options.

Wire-free models map the lawn during setup, usually by driving the mower around the edge with the app's remote control while it records the boundary, then adding exclusion zones and passages on the map. Walk slowly, keep the mower the recommended distance from edges, and redo any section where the map looks off.

Cameras and LiDAR help with obstacles: Segway says the Segway Navimow i105N Robot Mower camera recognizes more than 150 obstacle types, and the ECOVACS GOAT A3000 LiDAR Robot Mower maps with dual LiDAR. Still map hard boundaries for ponds, pools, drop-offs, gardens and play areas, and pick up hoses, toys and dog waste before each run. Obstacle detection is a backup, not a safety system for children or pets.

1. Install the maker's app, create an account and pair the mower over Bluetooth, then Wi-Fi or cellular.
2. Update the firmware before the first mow; updates often improve navigation.
3. Set the PIN and theft protection, and turn on GPS or 4G tracking where the model offers it (the LUBA 2 lists 4G tracking).
4. Name zones, set exclusion areas and confirm passages on the map.
5. Set the schedule. Daytime mowing, when you can see the lawn, keeps it clear of children and pets and is widely recommended to protect nocturnal wildlife.
6. Choose rain behavior, such as pausing in rain, to protect wet turf and slopes.

Start with longer daily schedules for the first two weeks while the lawn gets under control, then shorten them.

Robot mowers are designed to trim a little often, not to cut long grass. Mow the lawn down with a regular mower to within the robot's range before the first run, then start the robot at its highest setting and lower it in steps over a couple of weeks. Manufacturers including Husqvarna recommend this gradual approach.

Check that the robot's range fits your grass. The Husqvarna Automower 420iQ Robot Mower cuts from 1 to 4 inches, suiting most cool-season lawns kept at 3 to 3.5 inches. The Segway Navimow i210 AWD Robot Mower cuts 2 to 3.6 inches, which is too high for bermudagrass kept at 1 inch, while the Husqvarna Automower 520H EPOS Robot Mower goes down to 0.8 inch. The how to mow a lawn guide lists heights by grass type.

• Clean it: brush grass from the underside and wheels, with the mower switched off and disabled. Do not hose it unless the manual allows.
• Charge the battery fully before storage, as makers including Husqvarna direct, and store the mower indoors in a dry, frost-free place, standing on its wheels.
• Disconnect the charging station power supply and bring the power supply indoors; follow the manual on whether to bring the station in too. Cap or protect the wire ends.
• Leave the boundary wire in the ground; it is designed to stay year-round.
• Replace blades and check for firmware updates before spring, or book a dealer winter service.

Unplug the power supply during thunderstorms, since a lightning surge through a long wire loop can damage the station.