Power supply mode:3.3V external power supply, current should be more than 200mA;

   Control interface:The TTL level, 3.3V SPI interface;

   PCB size:23 * 25 mm;

   Mechanical Dimensions:28.5 * 23 * 24; 

   USR-ES1 is the Ethernet module of a SPI interface, interface is TTL level of 3.3V, power supply voltage of +3.3V, please ensure that the current is not less than 200mA, voltage is continuous and stable +3.3V.