Monitor & control your Antminer S21 from anywhere
AntminerTools gives you live hashrate, per-chain chip & PCB temperatures, power draw and remote reboot for your Antminer S21 fleet — on your phone or desktop, with no port forwarding and no VPN. Setup takes 2 minutes.
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Antminer S21 — models & specifications
Manufacturer-rated values; they vary by batch and work mode. AntminerTools reads live values directly from each unit.
| Model | Hashrate | Power | Cooling |
|---|---|---|---|
| Antminer S21 XP Hyd. | 473 TH/s | 5676 W | Hydro |
| Antminer S21 XP | 270 TH/s | 3645 W | Air |
| Antminer S21+ Hyd. | 319–395 TH/s | 4785 W | Hydro |
| Antminer S21 Hyd. | 302–335 TH/s | 5360 W | Hydro |
| Antminer S21 / S21+ / S21 Pro | 151–235 TH/s | ~3500 W | Air |
| Antminer S21 Immersion | 215–301 TH/s | 4800 W | Immersion |
How to monitor your Antminer S21
Run the lightweight connector agent on any PC or Raspberry Pi on your farm's network, click Scan, and every Antminer S21 on your subnet appears automatically — model, worker name, serial and MAC included. From then on it's live stats every 30 seconds.
Everything you get for your Antminer S21
Antminer S21 monitoring — frequently asked questions
How do I monitor my Antminer S21 remotely?
Create a free farm, run the connector agent on any PC or Raspberry Pi on the same network as your Antminer S21, then hit Scan. You'll see live hashrate and temperatures within a minute, from anywhere — no port forwarding, no VPN, no static IP.
Can I see Antminer S21 temperatures and get overheat alerts?
Yes. AntminerTools reads per-chain chip and PCB temperatures every 30 seconds and can automatically put a Antminer S21 to sleep if it overheats, plus email you on the Unlimited plan.
Does it work with every Antminer S21 variant?
Yes — every Antminer S21 running stock Bitmain firmware with the standard web interface is supported, including Hydro and immersion variants, with special handling for water-cooled temperature sensors.
How much does Antminer S21 monitoring cost?
Free for 1 farm and up to 4 miners with full monitoring and remote control. Paid plans add capacity from $3/mo, and email alerts + remote desktop on Unlimited.
Start monitoring your Antminer S21 — free
Create your account, run the agent, and see every Antminer S21 live — before your coffee gets cold.
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