The M5Stack Station ESP32 IoT Development Kit RS485 Version ('M5Station-485') is a multi-purpose industrial-level programmable embedded controller with an Espressif ESP32 SOC, integrated Wi-Fi and BT solution and a dual-core low-power Xtensa® 32-bit LX6 microprocessor with a main frequency up to 240MHz. The controller has 16M FLASH onboard alongside an integrated 240x135 1.14" full-colour HD IPS display + physical keypad + rich peripherals, two sets of six expansion ports + low-power sleep/wakeup functions. Users have multiple power supply options including USB Type-C, PWR485 and an external battery (battery socket reserved on board). The integrated high power density boost DC/DC converter SCT12A0DHKR on board ensures the stability of the electrical equipment even in complex applications. This device is suitable for industrial control, intelligent buildings, multi-channel data acquisition nodes and prototyping applications. We also stock the battery version of the M5Station. Interfaces * 1.14" IPS display * 3 physical programmable keys * 1 ON/OFF button * 7 programmable RGB LEDs Power Supply * Input: * Integrated 9~24V->5V DC/DC SY8303 Buck circuit * AXP192 power management chip * Output: * Each interface (6 Grove, 1 USB-A) is electronically switched on/off by SGM2553D. * INA3221 for voltage/current acquisition for Grove interfaces, and INA199 for current acquisition for the USB-A * Integrated high power density boost DC/DC converter SCT12A0DHKR * Low power consumption: * Integrated RTC BM8563 to achieve low-power sleep/wakeup function Port Design * 6-way Grove expansion interface * Port A1/A2 shared the same power and signal pins * Port B1/B2/C1/C2 have separate power and signal pins * PWR485 interface (4-wire - VH3.96) * RS485 * 9~24V power input * USB Type-A power supply output only, no signal pins Mechanical Design * Din rail * Magnet * Wall Mount * Screws * Ribbon Programming development * Supports UIFlow graphical programming platform, scripting, compile-free, cloud push * Fully compatible with Arduino, ESP32-IDF and other mainstream development platforms * Support FreeRTOS, with the help of dual-core and multitasking mechanism, efficient organization of task logic, optimize the execution efficiency of the program. Power Management * Power on: Click the central power button. * Power off: Press and hold the central power button for 4 seconds. Package Contents * 1x M5Station-485 * 1x Type-C USB cable (100cm) * 1x HEX Key Specifications ESP32-D0WDQ6-V3 240MHz dual-core 600 DMIPS 520KB SRAM Wi-Fi Flash 16MB USB powered 5V@1A RS485 power supply 9~24V@1A Interface Type-C * 1 GROVE (I2C+I/0+UART) * 6 Full-Size USB Type-A (OUTPUT) PWR485 LEDs SK6812 * 7 Pushbuttons Power Button, Physical Button \ 3 IPS LCD Screen 1.14"@240*135 ST7789V2 RTC BM8563 PMU AXP192 Voltage/Current Collector INA3221 + INA199 USB Chips CH9102F Step-Down Chips SY8303 DC/DC Boost SCT12A0DHKR Power Distribution Switch SGM2553D Antenna 2.4G 3D Antenna Operating Temperature 0°C to 60°C Base Screw Specification Hexagon socket cup head M2*8 screw Internal PCB reserved interface Battery interface (Specification:1.25mm-4P) USB line interface (Specification:1.25mm-4P) Net Weight 63.1g Gross Weight 108.1g Product Dimensions 92 x 64.5 x 35 mm Package Size 104.5 x 70.5 x 50mm Case Material ABS+PC Resources * Product Documentation * M5Station Arduino Library * Datasheets * ESP32 * ST7789v2 * SY8303AIC * SP3485 * SCT12A0DHKR * INA3221EN * INA199EN * SGM2553 * BM8563 * AXP192 datasheet * AXP192 register https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2023-03-07 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2023-12-27 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2024-09-18 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2024-11-29 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2024-11-30 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2025-08-06 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2025-11-28 https://elecena.pl/product/22727669/m5stack-station-esp32-iot-development-kit-rs485-version 2025-11-29