Product Overview

The Bitdeer SealMiner A2 Pro is a high-efficiency SHA-256 Bitcoin (BTC) ASIC miner delivering approximately 260 TH/s at 3,510W, achieving approximately 13.5 J/TH power efficiency. The SealMiner A2 Pro is manufactured by Bitdeer — a publicly listed mining technology company and one of the few non-Bitmain ASIC manufacturers to achieve mass production of cutting-edge SHA-256 hardware.

The A2 Pro sits at the top of Bitdeer’s current SealMiner lineup, built on their proprietary SEAL02 chip. At 13.5 J/TH, the A2 Pro directly competes with the Bitmain Antminer S21 XP 270Th in efficiency — positioning it as one of the leading air-cooled Bitcoin miners in terms of energy efficiency per terahash. For South African Bitcoin mining operators who want to diversify their hardware supply chain beyond Bitmain, the SealMiner A2 Pro offers a competitive alternative from a different manufacturer with its own vertically integrated chip design capability.

The SealMiner A2 Pro represents Bitdeer’s ambition to compete directly with Bitmain in the premium SHA-256 hardware segment. Its specifications — 260 TH/s at 13.5 J/TH — make it attractive for operators prioritising energy efficiency in their commercial Bitcoin mining operations.

Key Features

• 260 TH/s SHA-256 Hashrate (±3%): High-tier Bitcoin mining contribution per unit. At 260 TH/s, the A2 Pro delivers substantial pool contribution comparable to the best current-generation air-cooled Bitcoin miners.
• 13.5 J/TH Power Efficiency: Among the best efficiency available for an air-cooled Bitcoin miner — matching the Bitmain S21 XP and competing at the top of the SHA-256 efficiency spectrum.
• Bitdeer SEAL02 Chip: Built on Bitdeer’s proprietary chip, designed and developed in-house — representing Bitdeer’s entry into vertically integrated ASIC manufacturing to compete with Bitmain’s chip advantage.
• 3,510W Power Consumption: Industrial-grade power draw requiring dedicated 32A circuits and appropriate electrical infrastructure.
• Air-Cooled Industrial Design: High-speed fans in a front-to-back airflow configuration for rack deployment in ventilated mining facilities.
• Supply Chain Diversification: A non-Bitmain alternative at competitive specifications — relevant for operators who want to reduce concentration risk in their hardware suppliers.
• Standard Ethernet Management: RJ45 connectivity compatible with major Bitcoin mining pools and ASIC management platforms.

Technical Specifications

• Algorithm: SHA-256
• Supported Coins: Bitcoin (BTC), Bitcoin Cash (BCH), and other SHA-256 cryptocurrencies
• Hashrate: 260 TH/s (±3%)
• Power Consumption: ~3,510W (±5%)
• Power Efficiency: ~13.5 J/TH
• Chip: Bitdeer SEAL02
• Cooling: Air-cooled, high-speed fans
• Input Voltage: 200–240V AC, 50/60 Hz
• Networking: 1× RJ45 Ethernet
• Operating Temperature: 0°C to 40°C
• Power Supply: Confirm inclusion at time of purchase

Power & Installation Notes

The Bitdeer SealMiner A2 Pro draws approximately 3,510W continuously. South African installations must comply with SANS 10142 and be certified by a registered electrician. A dedicated 32A single-phase circuit is the minimum requirement. South Africa’s 230V / 50Hz supply is within the unit’s 200–240V input range.

Load shedding at 3,510W is not manageable with residential inverter systems. Commercial generator backup or planned downtime during load shedding is required. Factor expected outage hours into operational planning.

Industrial ventilation is essential — active extraction must maintain ambient temperatures below 40°C for sustained rated hashrate. The A2 Pro exhausts significant heat from its rear fans and requires directional airflow management.

Electricity Cost Context — South Africa

At R2.80/kWh reference tariff, the estimated monthly electricity cost is:

(3,510 ÷ 1,000) × 24 × 30 × 2.80 = R7,076.16 per month

This is an operating cost estimate only. At 13.5 J/TH, the A2 Pro achieves lower electricity cost per TH/s than less efficient miners — competitive with the best current-generation air-cooled Bitcoin hardware. Actual tariffs vary by municipality and supply category.

Ideal Use Cases

• Commercial Bitcoin mining with supply chain diversification: The A2 Pro is particularly relevant for operators wanting to reduce hardware supplier concentration risk by adding a non-Bitmain manufacturer to their mining fleet.
• Efficiency-focused Bitcoin mining: At 13.5 J/TH, the A2 Pro offers best-in-class air-cooled efficiency — suitable for operators who prioritise minimising electricity cost per TH/s above all other factors.
• Premium Bitcoin mining fleet expansion: For operations expanding their SHA-256 mining capacity, the A2 Pro’s efficiency profile makes it a competitive choice alongside or instead of Bitmain S21 XP hardware.
• Commercial operations with renewable energy: South African miners with access to PPA or wheeling arrangements can leverage the A2 Pro’s leading efficiency for competitive Bitcoin mining economics.

Frequently Asked Questions

Does the Bitdeer SealMiner A2 Pro work on South African power?
Yes. South Africa’s 230V / 50Hz supply is within the unit’s 200–240V input range. A dedicated 32A circuit certified by a registered electrician is required.

How does the A2 Pro compare to the Bitmain S21 XP 270Th?
The S21 XP 270Th delivers 270 TH/s at ~13.5 J/TH and 3,645W. The A2 Pro delivers 260 TH/s at ~13.5 J/TH and 3,510W — slightly lower hashrate but lower absolute power consumption. Both are among the most efficient air-cooled Bitcoin miners available. The A2 Pro is the non-Bitmain alternative at comparable efficiency.

What pool should I use?
Major SHA-256 Bitcoin pools include Foundry USA, AntPool, ViaBTC, F2Pool, and Binance Pool. The A2 Pro is compatible with standard SHA-256 Stratum pool protocols.

Can it handle load shedding?
Not on residential inverter systems. Commercial generator backup or planned downtime is required at 3,510W.

Is Bitdeer a reliable manufacturer?
Bitdeer (NASDAQ: BTDX) is a publicly listed company — formerly a major Bitcoin mining operator before pivoting to hardware manufacturing. The SealMiner series represents their first proprietary chip-based ASIC miners, developed to compete directly with Bitmain in the premium SHA-256 segment.

What’s Included

• 1× Bitdeer SealMiner A2 Pro 260TH mining unit
• Power supply (confirm inclusion at time of purchase)
• Power cables
• Quick-start documentation