SEQURE Blueson A1 20*20 2-6S 65A ESC with AM32 Firmware

SEQURE Blueson A1 AM32 ESC 20×20 2–6S 65A

The SEQURE Blueson A1 4-in-1 ESC is a solid choice for FPV racing and freestyle drone builds where quick response, clean power delivery, and dependable performance really matter. Designed in a compact 20×20 mm mounting format, it fits modern racing frames perfectly while offering support for 2–6S LiPo setups and up to 65A continuous current.

Built with a high-quality PCB with a thick copper layer, this ESC delivers excellent current handling and improved heat dissipation. Combined with premium MOSFETs, it helps boost efficiency, improve throttle feel, and keep your quad performing smoothly even during demanding flights.

A fast 32-bit AT32F421 processor and AM32 firmware provide precise motor control with dynamic PWM refresh from 8 kHz to 128 kHz. The result is more responsive throttle input, smoother motor operation, and a more locked-in feel in the air.

Large solder pads make assembly easier, which is especially helpful for hobbyists building or upgrading their own drone. Telemetry support and a built-in current sensor add useful tuning and monitoring options for advanced FPV setups.

Key features:

• 4-in-1 ESC for FPV drones with compact 20×20 mm mounting
• Supports 2–6S LiPo battery configurations
• 65A continuous current and 120A burst current on 6S
• AM32 firmware for smooth and responsive motor control
• 32-bit AT32F421 processor
• Dynamic PWM frequency: 8 kHz–128 kHz
• Premium MOSFETs for efficient operation and better flight performance
• Thick copper PCB for improved conductivity and heat dissipation
• Large solder pads for easier installation
• Telemetry support and built-in current sensor
• Compatible with DShot600 / 300 / 150, Oneshot, Multishot, and PWM

Specifications:

• Model: Blueson A1
• Processor: AT32F421
• Firmware: AM32
• PWM frequency: 8 kHz–128 kHz
• Operating voltage: 2–6S LiPo
• Continuous current: 65A (6S)
• Burst current: 120A (6S)
• Supported protocols: DShot600 / 300 / 150, Oneshot, Multishot, PWM
• Telemetry: Yes
• Current sensor: Yes
• BEC: No
• Mounting hole spacing: 20 × 20 mm, Φ4 mm / M3
• Product dimensions: 42.5 × 36 × 7 mm
• Product weight: 19 g

Package contents:

• SEQURE Blueson A1 4-in-1 ESC × 1
• 30AWG 40 mm cable with reverse dual SH1.0-8P connector × 1
• 30AWG 60 mm cable with single SH1.0-8P connector × 1
• 12AWG 100 mm power wires (black/red) × 2
• XT60H-M connector (male, black) × 1
• 35V 680 µF capacitor × 1
• M3 × 8 mm vibration-damping pads (black) × 5

Packaging information:

• Product dimensions: 42.5 × 36 × 7 mm
• Net product weight: 19 g
• Package dimensions: 90 × 60 × 35.5 mm
• Package weight: 63 g
• Outer carton dimensions: 155 × 105 × 40 mm
• Package weight with outer carton: 105 g