Features:1. Small size, high cost performance.2. RS232 to WIFI, support serial CLI command configuration, support LAN Telnet configuration.3. Support LAN Web configuration, support LAN IOT Service configuration, support IOT Service configuration.4. Support remote upgrade firmware, support remote device management, support remote parameter batch import and export.5. Support IP, TCP, UDP, DHCP, DNS, HTTP, Auto IP, Modbus TCP and other network protocols, support common encryption transmission mode, support power anti-reverse function, support rail installation.Specification:Power Supply: 5-36VDC Size: about 61*26*18mm/2.4*1.02*0.71inProcessor: Cortex-M4 SOSMain frequency: 160MHzFor Operating system: mbedFLASH resources: 4MBRAM: 448KBWireless standard: 802.11b/g/nAntenna form: built-in board section antennaWiFi band: 2.412GHz-2.484GHzPackage 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 will not mind before ordering.