Dc motor can be driven directly 2 road or road 1 stepper motor, drive current biggest can reach 1.2 A. Circuit diagram layout is reasonable, SMD encapsulation, installation is very convenient.     Module at the same time lead to VIN, 3.3 V, DIO, AIO, SDIO, UART, SPI, RST, EN, and many other pins, you can easily access various sensors (temperature and humidity, buzzer, lighting, relay, etc.)     Module USES ESP12E Dev Kit IO mouth as control port,Internal configuration logic chip IC complete motor drive, so just take up panel D1, D2, D3, D4 four ports, respectively as PWMA (A motor speed), PWMB (B motor speed), DA (A motor direction ), DB (B motor direction) of function.     Module USES the humanized design, use the power button switch, users can conveniently on the power switch.          colour:Black     Material:PC+metal          Package Contents:     1 x ESP8266 ESP-12E CP2102 WiFi Serial Development Board     1 x L293D WiFi Motor Drive Expansion Board Shield Module     1 x 24AWG 50cm/19.6inch Power Wire     1 x Mirco-USB Cable          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.