Welcome to the store! 1. Small size, high cost-performance. 2. RS232 to WIFI, supports serial CLI command configuration, supports LAN Telnet configuration. 3. Supports LAN web configuration, supports LAN IOT service configuration, supports IOT service configuration. 4. Supports remote firmware upgrade, supports remote device management, supports remote parameter batch import and export. 5. Supports IP, TCP, UDP, DHCP, DNS, HTTP, Auto IP, Modbus TCP and other network protocols, supports common encryption transmission mode, power anti-reverse function, supports rail installation. Features: 1. Small size, high cost performance. 2. RS232 to WIFI, supports serial CLI command configuration, supports LAN Telnet configuration. 3. Supports LAN web configuration, supports LAN IOT service configuration, supports IOT service configuration. 4. Supports remote firmware upgrade, supports remote device management, supports remote parameter batch import and export. 5. Supports IP, TCP, UDP, DHCP, DNS, HTTP, Auto IP, Modbus TCP and other network protocols, supports common encryption transmission mode, supports anti-power, supports rail installation. Specification: Power Supply: 5-36VDC Size: Approx. 61*26*18mm/2.4*1.02*0.71in Processor: Cortex-M4 SOS Main Frequency: 160MHz For Operating System: mbed FLASH Resources: 4MB RAM: 448KB Wireless Standard: 802.11b/g/n Antenna Form: Built-in short section antenna WiFi Band: 2.412GHz-2.484GHz Package List: 1 * Wifi Serial Server Note: Please note that the new type and old type of this product will be sent randomly, and make sure you don't mind before ordering.