The SEQURE Blueson A1 4-in-1 ESC is a powerful and versatile electronic speed controller designed for FPV racing, freestyle, and high-performance drone builds. Available in 6S 65A and 8S 70A versions, it supports a wide range of battery setups while delivering smooth throttle response and reliable power handling.
Powered by a high-speed AT32F421 32-bit processor, the Blueson A1 supports dynamic PWM frequencies from 8kHz to 128kHz, providing precise motor control and efficient operation. Its thick-copper PCB and high-quality MOSFETs improve current handling and heat dissipation during demanding flights.
Key Features
- 4-in-1 ESC for FPV drones
- Available in 6S 65A or 8S 70A versions
- AM32 firmware
- Dynamic PWM support from 8kHz to 128kHz
- High-quality MOSFETs for efficient performance
- Thick-copper PCB for improved cooling
- Supports DShot, OneShot, MultiShot, and PWM protocols
- ESC telemetry and current sensing
- Large solder pads for easier installation
- Compact 20 × 20mm mounting layout
- Integrated capacitor included
- No built-in BEC
Specifications
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Processor: AT32F421
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Input voltage: 2–6S or 2–8S LiPo/LiHV
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Continuous current: 65A at 6S / 70A at 8S
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Peak current: 120A at 6S / 150A at 8S
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PWM frequency: 8kHz–128kHz
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Protocols: DShot600/300/150, OneShot, MultiShot, PWM
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Telemetry: Yes
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Current sensing: Yes
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BEC: No
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Mounting: 20 × 20mm, M3
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Dimensions: 42.5 × 36 × 7mm
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Weight: 19g