Mature and stable onboard ESP-12F WIFI module, 4M large capacity byte flash
The I / O port and UART program download port of WiFi module are all exported, which is convenient for secondary development.
Built-in AC-DC switching power supply module, power supply mode supports AC90-250V / DC7-12V / USB5V
Built-in WIFI module RST reset button
ESP-12F supports the use of development tools such as Eclipse / Arduino IDE, and provides reference programs in the development-Arduino environment.
One 5V relay on board, output switching signal, suitable for controlling the load with the working voltage in AC250V / DC30V
Onboard power indicator, 1 programmable LED and relay indicator
L, N: AC90-250V power supply
AC90-250V to DC5V switching power supply (do not touch here directly with your hand when using the 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 respectively connected to GND, TX, RX, 5V of external TTL serial module. IO0 must be connected to GND when downloading, then the connection disconnected;
GPIO output port;
Relay output: Normally closed end, the relay is shorted to COM before pulling, and suspended after pulling;
COM: public end;
No: normally open, the relay is suspended before pullout, and short-circuited to COM after pullout.
LED power indication;
Relay indication LED: lights up during tearing.
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