DJI O4 Video Transmission System
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DJI O4 Air Unit digital FPV video system – 4K/60 fps
Compact digital FPV transmission
DJI O4 Air Unit combines a compact video transmitter and camera for digital FPV flying. The system records up to 4K at 60 fps and transmits a live 1080p feed at up to 100 fps. The transmitter weighs approximately 5.1 g without the camera, or about 8.2 g together with it.
Camera, stabilization and storage
The 1/2-inch CMOS camera has a 117.6° field of view and supports RockSteady 3.0+ stabilization. Gyroflow processing is supported when EIS is disabled. The unit includes 23 GB of built-in memory and does not support microSD cards.
Low latency and compatibility
Under the specified test conditions, CE transmission range is up to 6 km. Racing mode latency is about 20 ms with DJI Goggles 3 or 24 ms with Goggles N3 (1080p/100 fps). Compatible goggles and controllers are listed below. Betaflight 4.3.0 or later is supported.
Technical specifications
| Manufacturer | DJI |
| Model | O4 Air Unit |
| Product type | Digital FPV video transmission system |
| Transmission technology | DJI O4, H.265 |
| Live-view resolution | 1080p at 30 / 50 / 60 / 100 fps |
| Maximum transmission range (CE) | 6 km (test conditions, unobstructed and interference-free) |
| Minimum latency with DJI Goggles 3 | Approx. 20 ms (Racing mode, 1080p/100fps) |
| Minimum latency with DJI Goggles N3 | Approx. 24 ms (Racing mode, 1080p/100fps) |
| Link bandwidth | Up to 60 MHz |
| Transmission frequencies | 5.170–5.250 GHz / 5.725–5.850 GHz (subject to regional regulations) |
| Transmitter EIRP (CE) | 5.1 GHz: below 23 dBm; 5.8 GHz: below 14 dBm |
| Antenna configuration | 1 antenna, 1T1R |
| Camera sensor | 1/2-inch CMOS |
| Lens field of view (FOV) | 117,6° |
| Equivalent focal length | 14 mm |
| Aperture | f/2,8 |
| Focus range | From 0.6 m to infinity |
| ISO range | 100–6400 (Auto) / 100–12800 (Manual) |
| 4K recording (16:9) | 3840 × 2160 at 30 / 50 / 60 fps |
| 4K recording (4:3) | 3840 × 2880 at 30 / 50 / 60 fps |
| 1080p recording (16:9) | 1920 × 1080 at 30 / 50 / 60 / 100 / 120 fps |
| Recording format | MP4 |
| Maximum recording bitrate | 100 Mb/s |
| Color mode | Normal |
| Electronic image stabilization | RockSteady 3.0+ / Gyroflow support with EIS disabled |
| Built-in storage | 23 GB |
| microSD card support | No |
| Input voltage | 3,7–13,2 V |
| Operating temperature | From -10°C to 40°C |
| Transmission module weight without camera | Approx. 5.1 g |
| Module weight with camera | Approx. 8.2 g (excluding lens mount and antenna) |
| Antenna weight | Approx. 0.75 g |
| Transmission module dimensions | 30 × 30 × 6 mm |
| Camera module dimensions | 13,44 × 12,36 × 16,50 mm |
| Coaxial cable length | 50 mm |
| 3-in-1 cable length | 50 mm |
| Antenna length | 80 mm |
| Compatible flight-controller software | Betaflight 4.3.0 or later |
| Compatible DJI goggles | DJI Goggles 3, DJI Goggles N3, DJI Goggles 2, DJI Goggles Integra |
Compatible goggles and controllers
- DJI Goggles 3 + DJI FPV Remote Controller 3.
- DJI Goggles N3 + DJI FPV Remote Controller 3.
- DJI Goggles 2 + DJI FPV Remote Controller 2.
- DJI Goggles Integra + DJI FPV Remote Controller 2.
Package contents
- DJI O4 Air Unit transmission module – 1 pc.
- DJI O4 Air Unit camera module – 1 pc.
- DJI O4 Air Unit antenna – 1 pc.
- DJI O4 Air Unit 3-in-1 cable – 1 pc.
Specification DJI O4 Video Transmission System
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