Features:

• On-board mature and stable ESP-12F WIFI module, large capacity 4M Byte Flash
• The I / O port and UART program download port of the WiFi module are all exported, which is convenient for secondary development.
• On-board AC-DC switching power supply module, power s- - list text hereupply mode supports AC90-250V / DC7-12V / USB5V
• On-board WIFI module RST reset button
• ESP-12F supports the use of development tools such as Eclipse / Arduino IDE, and provides reference programs under the Arduino development environment.
• One 5V relay on board, output switching signal, suitable for controlling load with working voltage within AC250V / DC30V
• Onboard power indicator, 1 programmable LED and relay indicator

Function:

ESP-12F AC/DC Power Supply ESP8266 AC90-250V/DC7-12V/USB5V WIFI Single Relay Module Development Board

• L, N: AC90-250V power supply
• AC90-250V to DC5V switching power supply (Do not touch here directly with your hand when using AC power supply !!!)
• VCC, GND: DC7-12V power supply;
• Micro USB: DC5V USB power supply;
• Note: AC90-250V, DC7-12V, DC5VUSB can be selected as one of the three power supply methods.
• 6X6mm button: ESP8266 reset button;
• UART program download port: GND, RX, TX, 5V of ESP8266 are connected to GND, TX, RX, 5V of the external TTL serial module respectively. IO0 must be connected to GND when downloading, and then disconnected connection;
• GPIO pin out port;
• Relay output: Normally closed end, the relay is short-circuited to COM before pull-in, and suspended after pull-in; COM: public end; NO: Normally open, the relay is suspended before the pull-in, and shorted to COM after the pull-in.
• Power indication LED;
• Programmable LED;
• Relay Indication LED: Lights up during pull-in.

Introduction to GPIO terminal:

Package includes:

1 x Development Board fully assembled