Feature: 1. Designed for Multicolor 3D printing: Promising multicolor creativity with an easy and complete upgrade pack. 2. Supporting K1 Series Printers: Perfectly adapted to K1 Max, K1C, K1, and K1 SE. 3. Dedicated New Extruder: A cutter and run-out sensor are integrated for accurate filament change. 4. Creativity up to 16 Colors:Each CFS has 4 filament slots. 4 CFS can be linked to achieve 16-color printing. (only one CFS is included in this package) 5. Quick Connection to CFS: Enabling auto RFID filament recognition, auto filament switch and relay, etc. Specification: Control Method: Control by the original touch screen Connection Method: USB to 485 Extruder: Direct drive extruder: (Filament cutter and run-out sensor included) Auto Filament Loading or Unloading: Yes (Connection to CFS is required) UI: Updated with multicolor functions Printing Method: Wi-Fi Printing or LAN Printing Firmware Update: Update by USB drive at first, then OTA can be used Slicing Software: Creality Print 5.1 and newer versions App: Creality Cloud App for Remote Control (Multicolor G-code file transfer is enabled multicolor cloud slicing is not available yet) Dimensions: 379 × 314 × 276 mm Net Weight: 4.56 kg Number of Filament Slots: 4 Drying Method: Desiccant Filament Buffer: IN × 4 and OUT × 1 Number of Extensions: ≤ 4 RFID Filament Recognition : Yes Filament Diameter: 1.75±0.05 mm Connection Port: Creality 485 × 2 Power Supply: DC 24V Rated Power: 20W Status Indicator: Indicator light (white or red) × 4 Display Screen: Segment LCD showing temperature and humidity Filament Spool Compatibility: 1Kg filament spool diameter: 197-202 mm, thickness: 42-68 mm Supported Filaments: PLA or PETG or ABS or ASA or PET or PLA-CF Not compatible with flexible TPU, damp BVOH or PVA, or warped cardboard spools. Auto Filament Relay: Yes Package List: 1 x K1 Series CFS Upgrade Kit Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.