ESP-12F Dev board AC/DC power ESP8266 WIFI single relay AC90-250V/DC7-12V/USB 5V

Features:

• 1. On board mature and stable ESP-12F WIFI module, large capacity 4M Byte Flash
• 2. The i / O port and UART program to load the Wifi port module are all exported, convenient for secondary development.
• 3.On board AC-DC power adapter module, Power supply mode support AC90-250V / DC7-12V / USB5V
• 4. On-board WIFI Module RST Reset button
• 5. The ESP-12F supports the use of development tools such as Eclipse / Arduino IDE, and provides the Program Reference under-Arduino development environment.
• 6.A 5 V relay on board, signal switching output, suitable for load control with working voltage within AC250V / DC30V
• 7. Onboard power indicator light, 1 programmable LED and forward indicator light

Function:

• 1. L., N: AC90-250V power supply
• 2. AC90-250V to DC5V power adapter (don't touch here directly with your hand when using AC power supply !!!)
• 3. VCC, GND: DC7-12V power supply;
• 4. Micro USB: DC5V USB Source;
• Note: AC90-250V, DC7-12V, DC5VUSB can be selected as one of the three power supply method.
• 5.6X6mm button: ESP8266 reset button;
• 6. UART program loading port: GND, RX, TX, 5V of ESP8266 is connected to GND, TX, RX, 5V of respective external serial TTL module. IO0 must be connected to GND when downloading, and then disconnected;
• 7. GPIO pin out port;
• 8. Relay output:
• Normally closed, relay short circuit to COM before pulling in, and suspend after pull-in;
• COM: Last work;
• NO: Normally open, the relay is suspended before pulling in, and shorted to COM after pulling in.
• 9. LED indicator power;
• 10. Programmable LED;
• 11. LED Indicator Relays: Lights up during pull-in.