Features: The ESP-07S 3D printer accessory octopus WIFI expansion module- is the perfect solution for improving your 3D printing experience. Made from high-quality PCB- material, this module- is designed to provide stable and reliable WIFI connectivity- for your 3D printer. 32-bit Micro MCUclocked Support 80Mhz and 160Mhz Support RTOS;Achieve wireless control of 3D printer Support to use with SKR 2 board and OCTOPUS board With its easy-to-install design, the ESP-07S is ideal- for use in a variety of settings, including home, office, and classroom environments. Specifications: Model:ESP 07S Chip:ESP8266 SPI- Flash: Default 32-Mbit Interface: UART/ GPIO / ADC-/ PWM IO-Port:9 UART band- Rate:support 300-4608000bps default 115200bps Power Supply:Voltage 3.0V-3.6V Typical 33V Transmission Distance:10M Frequency Range:2400-2486.5Mhz Size:approx 22.73x20.62mm/0.89x0.73in Note: 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. Package includes: 1 Set ESP 07S WIFI Expansion Module-