This board is suitable for firmware burning test of modules such as Essence ESP-12S/12F/12E/07S/07/01/01S. All IO ports have been exported and can be used as a minimum system development board or a small batch burning fixture. The board supports firmware one-click download function and adds programming 1. Applicable: ESP-12S/12F/12E/07S/07/01S/01 2. Support one-click firmware download function 3. Safe and reliable, small size, long service life 4. And has power indicator light, burning indicator light, serial port communication indicator light 5. Lead out all IO ports, which can be used as the smallest system development board or fixture for small batch programming Material:plastic colour:black Package Contents: 1 * Development Board Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.