Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board Float Switch Sensor For Water Level Controller With 2 Meter Wire and cost in multi-device control

and cost in multi-device control systems

The WROVER variant includes 8MB external SPI flash and 4MB PSRAM

Compact Cold-Side Heatsink: Precision-machined aluminum cold plate provides excellent thermal contact with the Peltier module's cold face

Build contactless identification and access control systems with the RC522 RFID module from The Engineer Store

Arduino UNO+WiFi R3 ATmega328P+Node MCU ESP8266 CH340G Compatible Board Float Switch Sensor For Water Level Controller With 2 Meter Wire and cost in multi-device controlArduino UNO+WiFi R3 ATmega328P+NodeMCU ESP8266 CH340G Compatible Board The ultimate 2 in 1 development board combining the power of Arduino UNO R3 (ATmega328P) and NodeMCU ESP8266 WiFi module on a single PCB. Featuring a CH340G USB to serial converter and onboard DIP switches for seamless mode switching, this board eliminates the need for separate shields or wiring. Ideal for IoT projects, home automation, and wireless sensor networks. Available from