Description

ESP-12F by 2/4 relay module Development board secondary development A variety of specifications Product description ESP-12F 2-way relay Functional features 1. Onboard mature and stable ESP-1 2F WIFI module with large capacity 4M BY TE FL ASH; 2. WIFI module I/0 port and UART program download port are all introduced to facilitate secondary development; 3. Onboard WIFI module RST reset button; 4. Esp-12f supports ECLIPSE/ARDUINOIDE and other development tools to prov ide reference programs in the ARDUINO development environment; 5. Onboard 2 5V relay, output switching signal, suitable for controlling the loa d within AC250V/DC30V working voltage; 6. Onboard power indicator, 1 programmable L ED and relay indicator. Burning mouth: GND, RX, TX, and 5V of the ESP8266 are connected to GND, TX, RX, and 5V 0f the external TTL serial port module respectively. I00 must be connected to GND during downloading, and then disconnected from 100 and GND after downloading. Output end of relay: NC: normally closed end, relay is short-connected with COM before suction, and suspended after suction;COM: public end; NO: normal start, the relay is suspended before suction and short connected with COM after suction. GPIO port introduction: