fluke 15b+ digital multimeter

MH-Z19B - CO2 Sensor

USB External Sound Card Module with Speaker Interface for Raspberry Pi, jetsun and pc  

Introducing the Arduino UNO R4 Minima! This board boasts the RA4M1 microprocessor from Renesas, delivering increased processing power, expanded memory, and additional peripherals. And the best part? It stays true to the reliable UNO form factor and operates at a practical 5 V voltage. Brace yourself for an upgrade like no other with the Arduino UNO R4 Minima!