PSDK Direct Control — run the gun from the DJI remote
0–200 kg Pressure, Live on the Remote Screen
5G Cloud Upload — Job, Pressure & Position Data
One-Gun-One-Account Fleet Management
Quick-Release Mount + Aviation Case, Deploy in Minutes
The WillFly high-pressure fire water gun is a firefighting payload engineered for the DJI FC100 drone platform, designed for high-rise and hard-to-reach fire scenarios. Mounted under the FC100, it delivers a continuous, directed water jet at window height — keeping firefighters on the ground while the fire is attacked from the air. Every critical parameter is monitored and adjusted in real time from the DJI remote controller, so the operator always knows exactly what the gun is doing.
Unlike gravity-drop buckets, the water gun provides sustained pinpoint suppression: aim, hold and work the seat of the fire as long as the water supply lasts. It is a practical first-strike tool for urban high-rises, industrial sites and wildland interfaces.
The gun connects to the DJI remote controller directly via PSDK — no extra controller, no second screen. From the remote interface the operator can adjust:
• Oscillation speed and oscillation amplitude (sweep the jet across the fire front)
• Ascend speed and descend speed (track the fire floor smoothly)
• Stop height (freeze the jet exactly at the target window or flame front)
An electronic pressure sensor (range 0–200 kg) reads system pressure continuously, and the value is displayed in real time on the remote controller's operating interface. The operator sees pressure changes the moment they happen — a blocked nozzle, a supply drop or a valve issue is caught instantly, not discovered after landing.
With built-in 5G real-time networking, operation information, pressure data and position data are uploaded to the cloud platform during the mission. Fleet managers and command staff can review each job afterwards — where the gun worked, at what pressure, and for how long.
Each water gun ships with its own dedicated account (one-gun-one-account management). Device usage and job records stay tied to the unit — clean accountability for fire brigades, rental fleets and multi-team operations.
• Quick-release mounting — get on and off the FC100 in minutes
• Water inlet: 3/8 quick connector · Nozzle outlet: 1/4 quick connector
• Two-piece threaded lance — splits quickly for compact transport
• Aluminum aviation carrying case protects the full set in transit
Overall size 1600 × 250 × 150 mm (L × W × H) — a slim, vehicle-friendly footprint for rapid response crews.

High-rise exterior fires — attack window-level fires from outside without exposing personnel to falling debris or heat. See our aerial firefighting solutions.

Chemical and industrial fires — sustained jet cooling and suppression on tanks, pipelines and plant structures where crews cannot approach safely.
Wildland and interface fires — reach ridge lines and treetop fires beyond the range of ground lines. Pair it with our DJI-compatible firefighting water bucket for combined drop-and-jet tactics.

| Compatible Platform | DJI FC100 |
| Mounting | Quick-release connection |
| Overall Dimensions (L×W×H) | 1600 × 250 × 150 mm |
| Water Inlet | 3/8 quick connector |
| Nozzle Outlet | 1/4 quick connector |
| Storage Configuration | Aluminum aviation case + two-piece threaded lance (quick split) |
| Control Method | DJI remote controller, PSDK direct connection |
| Controllable Parameters | Oscillation speed, oscillation amplitude, ascend speed, descend speed, stop height |
| Pressure Sensing | Electronic pressure sensor, 0–200 kg, real-time display on remote UI |
| Connectivity | 5G real-time network — job info, pressure and position data uploaded to cloud |
| Account Management | One gun, one dedicated account |
Which drone does the fire water gun mount on?
It is engineered for the DJI FC100 platform with a quick-release mount. For details on the platform, see the FC100 payload system.
Can I see the water pressure while flying?
Yes. The electronic pressure sensor covers 0–200 kg and the reading is shown live on the DJI remote controller interface, alongside your oscillation and height controls.
How is the operation data managed?
Over 5G, job information, pressure data and position data upload to the cloud platform in real time, and each unit runs on its own dedicated account for clean fleet management.
WillFly Drone is the export brand of TDHP, manufacturer since 2016. 1,000+ units delivered to 30+ countries. OEM/ODM welcome. Contact us for a quotation — or reach us directly on WhatsApp: +86 138 128 56149.