1. Features BOOT and RESET buttons for firmware updates via USB DFU mode.<br> 2. Protection circuit on thermistor prevents main chip damage from heating rod leakage.<br> 3. USB power-on with jumper cap isolates main board DC-DC from USB 5V.<br> 4. I2C interface supports filament break/clog detection and DIY functions.<br> 5. Anti-flyback diodes on heating rod and fan ports protect MOS tube from reverse voltage.<br> 6. Power interface has anti-reverse protection to prevent motherboard damage.<br> Specs:<br> - Size: 40mm x 40mm<br> - Mounting: 31mm x 31mm hole spacing, 4x M3 screws<br> - Microprocessor: ARM-M0 STM32F072C8T6 (48MHz)<br> - Input: DC12V-24V, 9A<br> - Logic voltage: 3.3V<br> - Heating interface (E0): Max 5A output<br> - Onboard sensor: ADXL345<br> - Color/material: As shown, PCB<br> Package includes:<br> 1x Extruder Breakout Board Kit<br> Note: Minor appearance variations may occur between batches. Color and size may slightly differ due to lighting/display settings.<br> 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. Sold by-DIMEANI official store