Overview
Sub250 Send T400 is a lightweight FPV video transmitter (VTX) designed for sub-250g FPV drones. Frequency and output power can be adjusted via onboard buttons, or through a flight controller serial connection for OSD control. 7 LEDs indicate the current transmission channel and power status, and a built-in temperature control system helps reduce overheating risk.
Key Features
- Designed for FPV drones below 250g; lightweight build (2g)
- Button control for frequency point and power
- Flight controller serial/OSD control support (IRC Tramp)
- 7-LED status indication for frequency point and power
- UFL antenna connector
- Temperature control system
Specifications
| Brand | Sub250 |
| Model | Send T400 |
| Input voltage | 5V |
| Input impedance | 75Ω |
| Protocol | IRC Tramp |
| Output power | PitMode / 25mW / 200mW / 400mW |
| Frequency | 48ch |
| Microphone | No |
| Antenna connector | UFL |
| Cable connector | SH1.0 |
| Mounting hole | 25.5mm x 25.5mm (M2) |
| Weight | 2g |
What’s Included
- 1 x Send T400 VTX
- 1 x SH1.0 4-pin cable
- 1 x 5.8g antenna (50mm)
Applications
- Sub-250g FPV drone builds requiring a compact, adjustable VTX
- FPV setups using IRC Tramp control via flight controller and OSD
For installation guidance or pre-purchase compatibility questions, contact support@rcdrone.top or visit https://rcdrone.top/.
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