30-Channel Ethernet Relay Module with PoE Compatible With_Raspberry Pi 3A Plus 2L mm Weight 46g Shaft

2L mm Weight 46g Shaft diameter 4mm Performance at Maximum Efficiency

The Arduino Uno is a microcontroller board based on the ATmega328P (datasheet)

and you're thinking "it would be really great if I could attach some lasers to them" and then you see these little laser diode modules: what great timing

which can effectively prevent the probe from polarization and prolong the life of the probe

but they function in the exact same way as APA102 LEDs

30-Channel Ethernet Relay Module with PoE Compatible With_Raspberry Pi 3A Plus 2L mm Weight 46g ShaftThis 30 channel relay module allows you to manage multiple devices simultaneously through a single Ethernet port, using Modbus RTU and Modbus TCP protocols. Its support for Power over Ethernet (PoE) means you can power the device directly through the Ethernet cable, simplifying installation and reducing the need for extra wiring. Additionally, the module comes housed in a durable ABS rail mount case for easy and secure installation in various