ESP-01S module with relay V4.0 250V 10A ESP8266 WiFi ESP01 opto-isolation
€2.79
BME280 5V Pressure Temperature Humidity Sensor I2C SPI Module Arduino
€3.98
Raspberry Pi 5 WiFi Kit 4GB RAM PCIe 32GB microSD + Official Accessories
€127.27
Seeeduino XIAO SAMD21 soldered microcontroller compatible with Arduino Cortex M0+
€9.77
ESP-WROOM-32S CP2102 WiFi+Bluetooth microcontroller
€5.93