SIYI HM30 Full HD Digital FPV System

The SIYI HM30 is a full-HD digital FPV video link pairing a ground unit with a 0.96-inch OLED display to a compact air unit, giving up to 20km of interference-free range and support for S.Bus/PWM RC input on PX4, ArduPilot and INAV flight controllers.

Key features

• Up to 20km unobstructed transmission range across 16 communication channels
• Ground unit runs on hot-swappable NP-F550/750/950 batteries with 30W PD fast charging and a built-in 0.96" OLED status display
• Air unit weighs just 74g and outputs 16 channels of S.Bus plus 5 channels of PWM to the flight controller
• Works directly with SIYI's own FPV app as well as open-source ground stations like QGroundControl and Mission Planner
• IP53-rated ground unit for light dust and splash protection in the field

Specifications

• VTX power: 1000mW
• Antenna connector: SMA
• Max range: 20km
• Latency: 150 ms
• Ground unit weight: 132g
• Ground unit dimensions: 109 x 61 x 28 mm
• Ground unit power input: XT30
• Ground unit ports: S.Bus/PPM RC input, UART datalink, Ethernet, USB Type-C (video output, charging, firmware)
• Air unit weight: 74g
• Air unit dimensions: 70 x 55 x 16 mm
• Air unit input voltage: 11-16.8 V (3-4S)
• Antenna gain: 5 dBi omni, 11 dBi long-range (ground unit)

The standard air unit runs on 3S to 4S power (11–16.8V); higher-voltage builds need SIYI's optional 4S–18S power module, which extends input to 16.8–75.6V.