Overview
The CaddxFPV Walksnail Moonlight VTX is a digital FPV video transmitter (VTX) for 5.8GHz systems. It supports onboard MP4 (H.264) recording up to 4K@30/60fps with a maximum 150Mbps bitrate, wide 7.4V–25.2V input, dual IPEX antennas, Canvas OSD, and an average 22ms latency. Compatibility note: the Moonlight VTX does not support other Walksnail cameras; however, the Moonlight Camera (with video board) can be installed on other Walksnail VTX modules (VTX V2 Module, Mini VTX V3 Module, Mini 1s, and Mini 1s Lite) per the official guide.
Key Features
- 5.725–5.850GHz digital FPV transmission; EIRP limits: FCC <30dBm, CE <14dBm, SRRC <20dBm, MIC <25dBm.
- Onboard recording: 4K@30/60fps, 2.7K@30/60fps, 1080p@100/60fps, 720p@60fps; MP4 (H.264) format.
- Max bitrate 150Mbps for high-detail capture.
- Wide power input 7.4V–25.2V; typical consumption 12V@1.4A or 8V@2.2A.
- U3 MicroSD support up to 256G.
- Canvas mode OSD; average delay 22ms.
- Dual IPEX antenna connectors; compact mounting with 20*20mm/25*25mm (M2) hole patterns.
- I/O via JST1.0*4 (Power in) and JST0.8*6 (USB), plus Micro SD card slot and IPEX-1; UART RX/TX lines shown in the connection diagram. USB cable is used when upgrading.
Specifications
| Model | Moonlight VTX |
| Firmware name | Avatar Moonlight_Sky_X.X.X |
| Communication Frequency | 5.725-5.850GHz |
| Transmitter Power (EIRP) | FCC:<30dBm; CE:<14dBm; SRRC:<20dBm; MIC:<25dBm |
| 1/O Interface | JST1.0*4 (Power in); JST0.8*6 (USB); Micro SD card slot; IPEX-1 |
| Recording resolution | 4K@30/60fps, 2.7K@30/60fps, 1080p@100/60fps, 720p@60fps |
| Max Mbps | 150Mbps |
| Video format | MP4 (H.264) |
| Wide Power Input | 7.4V-25.2V |
| Power consumption | 12V@1.4A, 8V@2.2A |
| Memory card type | U3 MicroSD, Max 256G |
| VTX size | 15.3mm*34.5mm*34.5mm |
| VTX Installation hole distance | 20*20mm/25*25mm (M2) |
| Weight | Gross weight: 38.5g (Antenna not included) |
| OSD | Canvas mode |
| Latency | Average delay 22ms |
| Antenna | 2 (IPEX) |
Manuals
For product assistance or order support, contact support@rcdrone.top or visit https://rcdrone.top/.
Details

Connection diagram for VTX: power, ground, UART, and optional USB cable for upgrades.
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