BIAONU UV LED Driver for ELEGOO Saturn 2 & Saturn 8K

The board that turns 24 V from the power supply into regulated current for the UV array. You swap it when the light engine won't fire, fires intermittently, or dies partway through a print while the emitter looks intact. BIAONU makes it — there is no original ELEGOO part sold at retail.

Specifications

• 24 V input, 18–20 V output, 0.6–4.0 A
• Buck-boost topology with current regulation
• Trimmer pot for dialing in the LED current
• LED+ / LED− terminals plus a separate 24 V power connector

Compatibility: ELEGOO Saturn 2 and Saturn 8K — one 10" 8K platform, same mounting and connectors. A second listing from the seller also claims "Mars series" fitment but never names the models, so no Mars printer is listed here — ask the seller if that's what you need. After fitting, set the current with the trimmer to match your emitter.