Based on ESP32-S3 single chip microcomputer, it is equipped with Xtensa 32-bit LX7 dual-core processor, and its main frequency is as high as 240MHz. Integrated 2.4GHz Wi-Fi and Bluetooth 5(LE) dual-mode wireless communication, with excellent RF performance. Adopt high-quality relay, allowing access to load: less than equal 10A 250V AC or less than equal 10A 30V DC. On-board isolated RS485 interface is convenient for external expansion and access to various RS485 Modbus industrial expansion modules or sensors. On-board RTC clock chip supports timing tasks. On-board USB Type-C interface can be used for power supply, download and debugging, which is convenient for development and use. On-board terminal power supply interface only supports 5V power supply. On-board optocoupler isolation, to avoid relay external high-voltage circuit interference control chip. On-board digital isolation to avoid external signals interfering with the control chip. On-board integrated power isolation can provide stable isolation voltage without additional power supply at the isolation end. On-board RS485 transceiver indicator light is convenient to sense the running state of the equipment. Guide rail type protective casing is convenient to install and use, and it is safer with casing. Color:As Shown Material:plastic Package Contents: 1 * WiFi Relay 1 * Screwdriver 1 * Cable