SIYI HM30/MK32 Dual Air Unit with SBUS, PWM, Ethernet & MAVLink

The SIYI HM30/MK32 Dual Air Unit is the airborne module of SIYI's HM30 and MK32 links, carrying full HD digital video, RC control and a MAVLink telemetry datalink in one unit. Use it as a replacement or spare for an MK32 handheld ground station or HM30 ground unit on survey, inspection and agricultural drones.

Key features

• 16-channel S.Bus and 5-channel PWM outputs for the flight controller and servos.
• UART MAVLink datalink for Pixhawk-class ArduPilot and PX4 flight controllers.
• Ethernet video input for an IP camera or SIYI gimbal, sent down as 1080p full HD at around 150ms latency.
• Direct 11–16.8V input on XT30; higher-voltage flight packs connect through a step-down BEC.
• USB-C port for firmware upgrades and a built-in cooling fan.

Specifications

• RC outputs: 16-ch S.Bus, 5-ch PWM
• Datalink: UART (MAVLink)
• Video: Ethernet input, 1080p downlink, about 150ms latency
• Power input: 11–16.8V (XT30); higher voltages via BEC
• Dimensions: 70 × 55 × 16mm (antennas excluded, fan included)
• Weight: 74g
• Operating temperature: −10 to 50°C

Range depends on the ground end: SIYI rates the MK32 link at 15km and the HM30 at 20km, unobstructed and interference-free. For MK15 systems on 4S–14S agri packs, choose the MK15 air unit instead.