Waveshare Raspberry Pi Expansion Board Power Relay Board Module Kit for Raspberry Pi 3 2 A+ B+ 2B 3B,Remote Control Make Home Appliances Intelligent The RPi Relay Board gives your Pi the ability to control high voltage/high current devices, easily makes normal home appliances become intelligent. Supports Raspberry Pi A+/B+/2B/3B/3B+;High quality relays, loads up to 250VAC/5A, 30VDC/5A Onboard LEDs for indicating relays status;Photo coupling isolation, prevent interference from high voltage circuit Relay control jumper, allows to control the relays by custom pins other than the default pins Comes with development resources, including examples in wiringPi, WebioPi, shell, python, and bcm2835