1. Microcontroller: ESP32-S3 (default module: ESP32-S3-WROOM-1U-N16R8)
2. Wireless communication: 2.4GHz Wi-Fi (802.11 b/g/n), Bluetooth 5, BLE
3. Interface type: USB Type-C
4. Supply voltage: 5V
5. Functions: device power supply, USB communication, firmware download, etc.
6. Interface types: standard ethernet RS485; PoE ethernet CAN
7. Interface form: terminal block
8. Direction control: hardware automatically detects and controls data transmission direction
9. Interface protection: equipped with TVS diode protection, surge and ESD protection
10. Matching resistor: Default NC, reserved 120Ω matching resistor, can be enabled via jumper cap
11. Input channels: 8 channels
12. Input voltage range: 5V–36V
13. Input type: passive input / active input (NPN or PNP type)
14. Isolation type: bidirectional optocoupler isolation
15. Relay channels: 8 channels
16. Contact type: one normally open, one normally closed
17. Isolation type: optocoupler isolation
18. Indicator LEDs:
- RGB: colorful LED, customizable display colors
- PWR: power indicator; turns red when USB is connected and voltage detected
- TXD: transmit indicator; turns green when data is sent via RS485/CAN interface
- RXD: receive indicator; turns blue when data is received via RS485/CAN interface
19. Operating voltage range: 7V–36V
20. Housing: rail-mounted ABS protective enclosure
21. Dimensions: 175 x 90 x 40 mm
22. Based on the ESP32-S3 microcontroller, featuring an integrated Xtensa 32-bit LX7 dual-core processor with a maximum frequency of 240MHz
23. Integrated 2.4GHz Wi-Fi and low-power Bluetooth (Bluetooth LE) dual-mode wireless communication with excellent RF performance
24. Uses high-quality relays supporting load up to 10A 250V AC or 10A 30V DC
25. Digital inputs with bidirectional optocoupler isolation, supporting both passive and active digital inputs; relays support联动 mode control for input signals
26. Onboard isolated RS485 interface enables easy expansion with various RS485 Modbus industrial modules or sensors
27. Onboard header pins allow connection to other devices
28. Onboard USB Type-C interface supports power supply and firmware download/debugging, convenient for development
29. Onboard terminal block power input supports wide voltage range from 7V to 36V, suitable for industrial power applications
30. Onboard RTC clock chip supports scheduled tasks
31. Onboard W5500 Ethernet chip provides 10/100Mbps network connectivity via SPI interface
32. PoE Ethernet version supports external PoE module for Power over Ethernet functionality (compliant with IEEE 802.3af standard)
33. Onboard optocoupler isolation prevents interference from high-voltage circuits connected to relays affecting the control chip
34. Onboard digital isolation prevents external signal interference to the control chip
35. Integrated onboard power isolation provides stable isolated voltage; no additional power supply required at the isolated side 36. Built-in Micro SD card slot for external SD card storage of images or files
37. Onboard buzzer, RGB LED, power, and RS485 transmit/receive indicator lights to easily monitor device operation status
38. Rail-mounted ABS protective housing for convenient installation and safer operation