5V/7-28V Power Supply 8 Channel ESP8266 WIFI 8-way Relay Module ESP-12F Development Board Secondary Development Board

Note This product cannot be used directly it is suitable for ESP8266 secondary development learning beginners pay attention Feature Onboard mature and stable ESP 12F WiFi module large capacity 4M Byte FlashPower supply mode supports DC7 28V 5VOnboard WIFI module RST reset buttonESP 12F supports the use of development tools such as Eclipse Arduino lDEProvide reference program under Arduin0 development environmentOnboard 8 5V relays output switch signals suitable for controlling loads whose working voltage is within AC 250V DC30VOnboard power indicator and relay indicatorProduct specificationsBoard size 149 80mmWeight 140gPackage includes 1 x 8 way Relay ModuleProgramming port ESP8266 s GND RX TX 5V are respectively connected to the external TTL serial port module GND TX RX 5V IO0 must be connected to GND when downloading and then disconnect the connection between IO0 and GND after the download is complete Relay output NC Normally closed the relay is short connected with COM before the pull in and hangs in the air after pull in COM public end NO Normally open end the relay is suspended before being closed and shorted to COM after being closed GPIO lead port introduction NumberNameFunction Description1ADCA D conversion result Input voltage range 0 1V value range 0 10242IO2GPIO2 UART1 TXDTXDUART0 TXD GPIO13RXDUART0 RXD GPIO34GNDPower ground55V5V power supply

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Geekcreit