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NEXA1
From building facades to solar panels.
The all-in-one cleaning drone that makes the impossible possible
with DRT's proprietary technology
Holds its position even where GPS is blocked, and indoors.
Cleaning in dangerous places people cannot reach.
NEXA1 does it for you.
Six core technologies
that set NEXA1 apart
Lance Auto Sweep
A lance tilting up to 45° cleans wide surfaces from facades to solar panels in a single smooth pass. Improves the cleaning rate by 40%.
Position hold without GPS
On-board sensors recognize nearby buildings and structures in real time and fixes the aircraft's own position. It flies steadily next to buildings, downtown, under bridges and even indoors.
Tether System
A tether system that converts 220V ground power to DC and delivers it uninterrupted in flight. Finish even large buildings in one go, with no battery swaps.
LiDAR·Radar 5 Sensors
Five dual-type LiDAR and Radar sensors detect every obstacle and alert you instantly with TTS voice and warning tones.
IPX5 Water Resistant
An IPX5-rated (water-jet resistant) design and a water-repellent cover keep the view clear and the gimbal stable while spraying water during cleaning.
Foldable Structure
A proprietary folding design shrinks the drone to under 1/3 of its operating size. Switch to transport/storage mode in seconds with no loss of performance.
Wide surfaces cleaned
in a single pass
NEXA1's innovative 'Lance Control' makes it easy to clean places that were hard to reach before, from the building facade in front to the solar panels below. The 'Auto Sweep' function cuts unnecessary drone movement and completes the job in just one pass.
Holds its position
even where GPS can't reach
Ordinary drones fix their position from satellites. Right next to a building, between high-rises or under a bridge, where the sky is hidden, their position jumps and the aircraft drifts. That is exactly where a cleaning drone works.
NEXA1 is different. Its on-board sensors recognize the surrounding buildings and structures in real time and fixes its own position, so it holds still even when the GPS signal is weak or gone. It flies indoors the same way.
GPS shadow zones
Next to buildings · between high-rises · under bridges
Indoor flight
Even with no satellite signal at all
Omnidirectional avoidance
Avoids approaching obstacles and warns at once
What makes it different
from an ordinary drone
How a satellite-only drone and NEXA1 behave on the same site.
| Situation | Ordinary GPS drone | NEXA1 |
|---|---|---|
| Right next to a building | Satellites are hidden, position jumps, it drifts toward the wall | Measures the distance to the wall with its sensors and holds its place |
| Downtown, between high-rises | Reflected signals make the position error grow | Fixes its position on the surrounding buildings and stays steady |
| Under a bridge or roof | Loses position, manual control only | Position-hold flight without satellites |
| Indoors | Flight itself is difficult | Holds position and moves indoors too |
| Obstacles | Forward sensor only, or a warning at best | Watches all around, avoids, and warns the pilot |
Set two points,
and the drone cleans on its own
NEXA1's intelligent 'Vertical AB' mode dramatically reduces operator fatigue. With the throttle alone, the operator can clean an entire wide facade evenly.
Automatic Path Generation
Set points A and B and the drone generates its own optimal zigzag path, climbing along the wall and cleaning every part of it
Automatic Wall Distance Hold
Five sensors track the distance to the wall in real time, holding the set distance precisely even against high-pressure spray recoil
One-Touch Control
No complex inputs: the throttle alone is enough to clean an entire wide facade evenly and efficiently
Far Less Fatigue
Dramatically lower operator fatigue compared with manual control, keeping quality consistent even over long sessions
Beyond the limits
of the battery
DRT's proprietary tether system removes the limit on flight time entirely. An ultra-light power cable converts 220V ground power to DC and delivers it uninterrupted to the drone in flight.
220V → DC
Ground power converted and delivered in real time
Unlimited Flight
Zero battery swaps, zero charging downtime
Uninterrupted Work
Even large buildings finished in one go
A steady view,
even in the spray
An IPX5-rated (water-jet resistant) design and a water-repellent cover keep the view clear and the 1-axis gimbal stable while spraying water during cleaning.
1080p Ultra-Wide Camera
160° ultra-wide lens and 1/2.7" CMOS sensor for an exceptionally clear view
Ultra-Low-Latency Streaming
Optimised RTSP H.264 system for lag-free real-time video transmission and recording
1-Axis Gimbal Stabilisation
Shake-free, stable footage even in splashing water
Intelligent safe flight
with no blind spots
Five dual-type LiDAR and Radar sensors precisely detect every obstacle along the flight path
and keep the operator informed with continuous visual and audible warnings.
LiDAR + Radar
Dual × 5
A dual-type, five-sensor architecture that precisely detects windows, buildings and structures without exception
LiDAR ~20m · Radar ~10mTTS + Beep
Dual Warning
In a hazardous situation, a pop-up message plus voice (TTS) and warning tones prompt the operator to respond quickly
Accuracy ±2cm / ±2%DRTView
Dedicated GCS
The dedicated GCS app visualises sensor data, flight information and obstacle warnings in real time
See DRTView →A new standard
for transport and storage
The proprietary folding structure shrinks the drone to under 1/3 of its operating size. Smaller, but with no loss of performance at all, and going from operating state to folded takes only seconds.
× 380 mm
× 380 mm
Results beyond promises,
proven in the field
We learn and advance in the real field, not the lab. From commercial buildings to vast solar farms,
the feedback from every project drives NEXA1's innovation.
| Airframe | |
| Airframe weight | 13 kg |
|---|---|
| Dimensions (folded) | 430 × 650 × 380 mm |
| Dimensions (unfolded) | 1,220 × 1,160 × 380 mm |
| Max takeoff weight | 25 kg |
| Wind resistance | Up to 10 m/s |
| Core Systems | |
| GNSS | ZED-F9P RTK (GPS + Galileo + BeiDou + GLONASS) |
| Video system | RTSP H.264 1080p · 160° ultra-wide lens · 1/2.7" CMOS · 1-axis gimbal |
| Battery | 44.4 V / 30,000 mAh / 12S LiPo |
| Flight time | Approx. 30 min on battery |
| Cleaning Performance | |
| Cleaning rate | 725 m²/h |
| Max water pressure | 220 bar (20 L/min pump) · 120 bar (50 L/min pump) |
| Vertical AB | Semi-automatic zigzag path generation · automatic wall distance hold |
| Position hold | Sensor-based self-positioning · flight in GPS shadow zones and indoors · omnidirectional obstacle avoidance |
| Tether System | 220V AC → DC tethered power supply · unlimited flight time |
| Safety Systems | |
| Multi-sensor | Radar ~10m · LiDAR ~20m Accuracy: ±2cm (under 2m) / ±2% (2m and above) |
| Waterproof | IPX5 rating · water-jet resistant (in-house tested) |
| Additional features | TTS/Beep obstacle warnings · dedicated GCS app integration · fall-prevention parachute (optional) |
The new standard in cleaning drones.
Bring NEXA1 on board today
From your first enquiry to tailored solution consulting, DRT's experts are with you.
Contact Us