The fingerprint single-channel relay module uses STM32F103C6T6 as the main control chip, equipped with a 0.96-inch OLED screen and a 5V relay to realize fingerprint recognition. The product supports Type-C port power supply mode, and the module can realize the function of opening the relay after successful fingerprint recognition. +UART debugging port is introduced to facilitate secondary development by users. Colour:blue Material:PCB+Components Due to different product batches, the appearance , which does not affect the use Package Contents: 1 * Fingerprint single-channel relay module 1 * fingerprint module 1 * pin header 1 * short circuit cap Only the above package content, other products are not included. Note: Light reflection 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.