4-in-1 Fan Speed Simulator for Antminer S19 series L7 D7 E9 Pro

4-in-1 Fan Speed Simulator – Antminer S19 / L7 / D7 / E9 Pro & Iceriver KS Series

Swap your stock fans for water cooling, a silencer blower, or immersion hardware without triggering safety shutdowns. This 4-in-1 fan speed simulator emulates normal RPM signals on all four fan headers at once, keeping your miner firmware satisfied while an alternative cooling solution handles the thermals. Compatible with Antminer S19 series, L7, D7, E9 Pro and Iceriver KS5L, KS3L, KS3M, KS3, KS2, KS1.

Universal Compatibility Across Antminer & Iceriver Models

Most ASIC miners monitor every fan channel independently — if a single channel reports zero RPM, the board halts. The 4-in-1 design covers all channels with one device, so you do not need separate simulators for each header. Plug it in, remove the fans, and connect your cooling system of choice: closed-loop water block, external blower, or full immersion tank.

Plug-and-Play Installation, No Firmware Modification

The simulator connects directly to the standard 4-pin fan headers. No kernel patch, no SD card flash, and no soldering required. If you ever want to return to air cooling, simply unplug the simulator and reconnect the original fans. The device also works alongside silencers and aftermarket water-cooling plates for a hybrid setup.

4-in-1 Fan Simulator Specifications

Related Fan Simulators & Cooling Accessories

• S21/T21 Fan Speed Simulator
• Iceriver Fan Simulator (RX0/KS1–KS5L)
• S19K Pro 4-in-1 Fan Simulator
• APW12 PSU Fan Speed Simulator

Outfitting a multi-brand mining farm with alternative cooling? Contact us at contact@lys-sz.com for simulator bundles and volume pricing.

Worldwide shipping from our Shenzhen warehouse.