[Interface]：USB

[Dimensions]：74.5*24.5mm

[Introduction]：E103-W04-TB is a test base board for E103-W04 and E103-W04B modules. It has a built-in E103-W04 module and a built-in PCB antenna. All pins have been drawn out and can be used with an external 2.54 Dupont cable. . The product has a built-in USB 2.0 to TTL interface, which is convenient for direct connection to a computer.