Industrial Control Board WiFi Network Relay Supporting WiFi Bluetooth With Multiple Isolation Protection Circuits 1. Microcontroller: ESP32-S3 (default is ESP32-S3R8 chip) 2. Wireless communication: 2.4GHz Wi-Fi (802.11 bgn), Bluetooth 5 (LE) 3. USB interface: - Interface type: Type-C - Supply voltage: 5V - Functions: power supply for the device, USB communication, firmware download, etc. 4. Isolated RS485: - Interface type: terminal block - Direction control: automatically controlled through the main control hardware flow - Interface protection: provides TVS diode protection, surge and static protection - Matching resistance: default NC, reserved 120R matching resistor, can be enabled by jumper cap 5. Relay: - Allowed load connection: less than or equal to 10A 250V AC or less than or equal to 10A 30V DC - Relay channels: 1 channel - Contact type: normally open - Isolation type: optocoupler isolation 6. Indicator lights: - PWR: power indicator light, turns on red when USB is connected and voltage is detected - RS485: green light is on when data is sent from the RS485 interface, blue light is on when data is sent back from the RS485 interface - Relay: relay indicator light, turns on when the normally closed contact is closed 7. Terminal power supply range: 5V 8. Shell: rail-mounted protective shell 9. Size: about 9.16 x 2.33 x 5.87 cm Feature: 1. Based on the ESP32-S3 single-chip microcontroller, it is equipped with an Xtensa 32-bit LX7 dual-core processor with a maximum frequency of 240MHz 2. It integrates 2.4GHz Wi-Fi and low-power Bluetooth 5 (LE) dual-mode wireless communication, featuring excellent radio performance 3. It uses high-quality relays, allowing for the connection of loads: less than or equal to 10A 250V AC or less than or equal to 10A 30V DC 4. It has an onboard isolated RS485 interface, facilitating the external expansion of various RS485 Modbus industrial expansion modules or sensors 5. It has an onboard RTC clock chip, supporting timing tasks 6. It has a