ESP8266 / ESP32 WIFI 8 Channel Relay Module Esp-12F / ESP32-WROOM Development Board DC 5V / 7-28V DC5-30V ESP32-WROOM Product description ESP32 eight-way relay development board is equipped with ESP32-WROOM-32E WiFi&BLE module, all I/O ports are led out, and supports DC5-30V power supply mode. It is suitable for ESP32 secondary development and learning, smart home wireless control and other occasions. Features 1. Onboard mature and stable ESP32-WROOM-32E module, large capacity 4M Byte Flash; 2. The I/0 port and UART program download port of the ESP32 module are all led out, which is convenient for secondary development; 3. Power supply voltage DC5V/7-30V; 4. Onboard ESP32 module IO0 programmable button and reset button; 5. ESP32 supports the use of Arduino IDE development tools and provides reference programs in the Arduino development environment; 6. On-board 8-way 5V relay, output switch signal, suitable for controlling loads with working voltage within AC 250V/DC30V; 7. Onboard 1 programmable LED and relay indicator. 5V/7-28V ESP8266 ESP-12F Features Onboard mature and stable ESP-12F WiFi module, large capacity 4M Byte Flash Power supply mode supports DC7-28V/5V Onboard WIFI module RST reset button ESP-12F supports the use of development tools such as Eclipse/Arduino IDE On-board 8-way 5V relay, output switch signal, suitable for controlling loads with working voltage within AC250V/DC30V Onboard power indicator and relay indicator Product Description Equipped with ESP-12FWIFI module, supports DC7-28V/5V power supply mode. Eight-way ESP8266 relay development board, suitable for ESP8266 secondary development and learning, smart home wireless control and other occasions. _x000D_