Waveshare Multi Protection 8-Channel Industrial Relay Module for Raspberry Pi Pico Features 1. Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal 2. Onboard photocoupler isolation, prevent interference from external high-voltage circuit connected to the relay 3. High quality relay, contact rating: 10A 250V AC or Less than or equal 10A 30V DC 4. ABS protection enclosure with rail-mount support, easy to install, safe to use 5. Breakout USB port and BOOT pin, make it easy to debug without disassembling the enclosure 6. PWR indicator, RGB LED, and passive buzzer outside the enclosure 7. Come with development resources and manual (Raspberry Pi Pico CC++ and MicroPython examples) Specification 1. Operation voltage: 5V 2. Relay channel: 8CH 3. Communication protocol: USB 4. Contact form: 1NO 1NC 5. Communication interface: Micro USB Package List 1. ABS protection enclosure (top and bottom) x 1 2. Pico-Relay-B x 1 3. Screwdriver x 1 4. Screws pack x 1