The Sealminer A2 Pro Air (255T) is the result of Bitdeer’s relentless innovation in vertical integration. Unlike traditional miners that rely on third-party silicon, the A2 Pro is built around the SEAL02 chip, a second-generation 4nm processor specifically optimized for the SHA-256 algorithm. This allows the A2 Pro Air to reach efficiency levels previously reserved for hydro-cooled units.
Powered by the SEAL02 4nm Architecture
The heart of the A2 Pro Air is its high-bin SEAL02 chips. By utilizing advanced process nodes, Bitdeer has achieved a power-to-hash ratio of 14.9 J/TH. This ensures that even as Bitcoin network difficulty rises, your operational margins remain protected. The unit’s adaptive frequency scaling technology further stabilizes performance by dynamically adjusting to voltage fluctuations.
Industrial-Grade Thermal Management
While many 250+ TH/s miners struggle with heat, the Sealminer A2 Pro Air features a refined “wind-tunnel” design:
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High-Static Pressure Fans: Four industrial-grade fans provide consistent airflow, maintaining chip temperatures even in ambient environments up to 50°C.
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Optimized Heatsinks: Custom-engineered aluminum fins dissipate 40% more heat than previous generations, reducing the risk of thermal throttling.
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Acoustic Optimization: Despite its power, the A2 Pro Air is designed to be 3–4 dB quieter than mainstream competitors, making it more manageable in high-density hosting facilities.
Technical Specifications Overview
| Feature | Specification |
| Manufacturer | Bitdeer |
| Model | Sealminer A2 Pro Air (255 TH/s) |
| Algorithm | SHA-256 (BTC, BCH, BSV) |
| Hashrate | 255 TH/s ±10% |
| Power Consumption | 3799W ±5% |
| Power Efficiency | 14.9 J/TH |
| Chip Technology | SEAL02 (4nm Process) |
| Voltage Input | 220V – 277V |
| Cooling Method | Air-Cooling (4 x High-Speed Fans) |
| Dimensions | 197 x 365 x 292 mm |
| Net Weight | 15.5 kg |
Why Buy the Sealminer A2 Pro Air from CryptoMiners24?
Investing in Bitdeer’s latest technology requires a reliable distribution partner. CryptoMiners24 offers:
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Direct-to-Factory Sourcing: We provide 100% genuine Bitdeer units with verified 360-day manufacturer warranties.
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Global Express Logistics: Fully insured shipping to over 100 countries via DHL and FedEx.
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Secure Crypto Payments: Buy with Bitcoin (BTC), USDT, or traditional bank transfers.
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Professional Hosting Solutions: Ask about our data center hosting options for large-scale A2 Pro deployments.
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Upgrade to the 500T Hydro-cooled Sealminer for industrial setups.
Pro Tip: The Sealminer A2 Pro Air 255T requires a 220V–277V power source and high-quality C19 power cables. Due to its 3799W draw, ensure your circuit can handle at least 20A continuous load.





