Kingjinglo was founded in 1999. We are committed to providing consumers with quality products and services.Features: Powerful 32 Bit Processor: Atmel ATSAME51N: ARM Cortex-M4F microcontroller running at 120MHz, with 512Kb flash memory, 384Kb random access memory and many peripherals.Three high-current advanced TMC5160 stepper drivers: SPI controlled will all the latest Trinamic features. Maximum motor current 6.3A per phase (4.45A RMS).One CAN-FD BUS for connection to the main board, 3 medium current heater channels for up to 3 extruders.6 PWM controllable fan channels. 3 of these support 4 wire fans including tacho reading. These can be run from either the input voltage, from 12V, or from external power for added flexibility. Also one always-on fan connector supplied with VIN voltage.Automatic ADC gain calibration for thermistors allows for accurate and repeatable temperature setting. PT1000 sensors are supported in addition to thermistors. In addition PT100 and Thermocouples are supported through SPI daughter boards.Specification: Item Type: Expansion Board 3HCModel Number: Duet 3 Size:approx 10x10cm/3.93XX3.93inWeight:170g/0.37lb Material:MetalPackage Includes: 1X Expansion Board 3HCnote: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.