Sunlu FilaDryer S4 is a filament dryer which can dry 4 spools at once. The maximum temperature is 70°C. It has a powerful 330W PTC heater for faster heating.
Product link (affiliate): https://www.sunlu.com/products/sunlu-...
The sponge and noise tests are comparable with other similar testing videos. The link to this filament dryer comparison table: https://www.mytechfun.com/filament-dr...

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Chapters:
0:00 Introduction
0:17 Specifications
0:52 Why filament dryer?
1:09 Unboxing
1:39 Overview
3:28 Power ON, screen
4:12 Sponge test
6:40 The noise
7:02 Back to sponge test
9:02 Data analysis
9:51 Conclusions

#3dprinting #filamentdryer #sunlu