AZDelivery MQ-135 gas sensor air quality module compatible with Arduino including e-book (English language not guaranteed) : Amazon.de: Computer & Accessories
Aihasd 20Stk 5x7 4x6 3x7 2x8CM Double Side Lochrasterplatte Lochrasterplatine Leiterplatte Platine PCB Universal Board: Amazon.de: Elektronik & Foto