Bitdeer SealMiner A4 Pro Air (336TH)

The Bitdeer SealMiner A4 Pro Air is Bitdeer's air cooled SHA-256 Bitcoin miner, launched April 7, 2026 by Bitdeer Technologies Group (NASDAQ: BTDR) as part of the A4 series. 336 TH/s SHA-256 at 3,662.4W continuous power draw and 10.9 J/TH efficiency. ±10 percent hashrate tolerance (real world output 302 to 370 TH/s) and ±5 percent power efficiency tolerance per Bitdeer documentation. Compact chassis at 197 x 365 x 292 mm and 15.5 kg. 220 to 277V single phase AC input. Ethernet 10/100M management.

SEAL04 chip platform in air cooled form factor. The A4 Pro Air runs the same fourth generation SEAL04 proprietary chip as the A4 Pro Hydro and A4 Ultra Hydro, delivering SEAL04 architecture in air cooled packaging. This represents a deliberate product strategy: operators without three phase and hydro infrastructure can access current generation chip architecture without facility CapEx for hydro loops or electrical upgrades. The air cooled variant trades hashrate per unit (336 TH/s versus 680 to 886 TH/s on hydro) for deployment simplicity.

A4 series complete lineup context. Bitdeer launched three A4 models simultaneously on April 7, 2026 covering different deployment scenarios on the same SEAL04 chip platform. A4 Pro Air at 336 TH/s and 3,662.4W delivers 10.9 J/TH air cooled with 220 to 277V single phase input and -20 to 50 degrees Celsius wide operating range. A4 Pro Hydro at 680 TH/s and 7,412W delivers 10.9 J/TH hydro cooled with 380 to 480V three phase input. A4 Ultra Hydro at 886 TH/s and 8,372.7W delivers 9.45 J/TH as the flagship hydro efficiency tier. Selection logic: facility without hydro or three phase chooses A4 Pro Air; facility with hydro infrastructure chooses A4 Pro Hydro or A4 Ultra Hydro based on hashrate density needs.

Generational efficiency progression within Bitdeer air cooled lineup. SealMiner A1 series 30+ J/TH, SealMiner A2 air at approximately 19 to 22 J/TH, SealMiner A3 air at 12.5 to 14 J/TH, SealMiner A4 Pro Air at 10.9 J/TH. Each generation has delivered meaningful efficiency improvements, with the A4 Pro Air at 10.9 J/TH representing approximately 13 percent improvement over the A3 air generation. For operators refreshing A3 air cooled fleets or competing air cooled alternatives, the A4 Pro Air delivers current frontier efficiency in Bitdeer's air cooled product line.

Competitive Bitcoin air cooled landscape at the 300 to 350 TH/s hashrate tier. Bitmain Antminer S23 (318 TH/s at approximately 14 J/TH), Bitmain Antminer S21+ (235 TH/s at 16 J/TH), Bitmain Antminer S21 XP (270 TH/s at 13.5 J/TH), MicroBT Whatsminer M70 (214 TH/s at 18 J/TH), Bitdeer A4 Pro Air (336 TH/s at 10.9 J/TH). The A4 Pro Air sits at the efficiency lead in current generation air cooled Bitcoin hardware, approximately 22 percent better per terahash than the closest Bitmain air cooled alternative (S21 XP at 13.5 J/TH) at higher hashrate per unit.

Wide operating temperature range. Bitdeer's A4 Pro Air specification covers -20 to 50 degrees Celsius ambient, notably wider than the A4 hydro models' 20 to 55 degrees Celsius. The specification accommodates cold climate deployments (Scandinavia, Canada, upper Midwest winters) without requiring facility heating to maintain minimum temperature thresholds. For hot climate deployments (UAE, Texas summer, Arizona), the 50 degree maximum aligns with typical air cooled ASIC tolerance. Per Bitdeer documentation, the A4 Pro Air features a "refined thermal architecture capable of thriving in extreme conditions."

Power infrastructure simplicity. 220 to 277V single phase AC input at approximately 16 amps continuous at 220V. Deployable in standard commercial electrical service including 220V appliance circuits (EV chargers, dryer outlets in residential settings with industrial circuit access) and 240V commercial service. Removes three phase requirement of A4 hydro variants. Frequency range typically 50 to 60 Hz.

Physical form factor. 197 x 365 x 292 mm compact chassis at 15.5 kg. Standard Bitcoin ASIC air cooled form factor with fan intake and exhaust configuration. Fits on shelves, in compact rack arrangements, or in dedicated 19 inch server racks depending on facility design. Approximately 12,497 BTU per hour heat output per unit requires ventilation planning for multi unit deployments.

75 dB industrial air cooled noise from cooling fan assembly. Requires dedicated mining space: warehouse, outbuilding, garage with sound isolation, basement with ventilation, professional hosting facility. Not suitable for residential rooms or shared offices without sound containment.
Mines Bitcoin (BTC) as primary network, plus Bitcoin Cash (BCH) and Bitcoin SV (BSV) through SHA-256 algorithm. Ships with PSU, power cables, quick start guide, 6 month Bitdeer factory warranty, and free DDP worldwide delivery from MillionMiner covering all customs clearance, import duties, and taxes.