SUNLU S4 Pro Filament Dryer

Dual‑zone independent heating – two chambers, each 45‑85°C, dry two filaments at once with no interference.

One‑screen dual control – single display manages both zones, easy and intuitive.

Built‑in annealing mode – 70‑85°C for 2‑3 hours, perfect for functional filament post‑processing.

Smart humidity regulation – auto maintains 30‑50% RH, stops at 25% to prevent re‑absorption.

Triple safety system – PTC heater, metal fan, secondary thermal switch + software protection for total reliability.

All‑in‑one – drying + annealing in one compact unit.

About US

Shipping

* You can check parcel tracking information through this ways:

1.https://www.17track.net

2.http://track.4px.com

3. Leave a message to us, then we will check the parcel information for you.

After Sale

*We offer a one-year warranty for electronic products , but damage caused by using non original brand filament or not following the instructions correctly is not covered by the warranty.

*Please provide us with the proof of video if products have any problem after receiving the parcel within 7 days, we will offer replacement or refund after confirming the problem.

Contact Us

*If satisfied with our product, please kindly leave us a positive feedback and 5 stars.

*If any questions, you may contact our customer service in 24 hours before negative feedback. We'll try our best to help you.

We look forward to cooperating with you next time!