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Waveshare RPi Relay Board for Raspberry Pi A+/B+/2B/3B - Blue
Raspberry Pi Expansion Board£¬ Power RelayOverviewThe RPi Relay Board gives your Pi the ability to control high voltage/high current devices£¬ easily makes normal home appliances become intelligent. RPi Relay Board Features Supports Raspberry Pi A+/B+/2B/3BHigh quality relays£¬ loads up to 250VAC/5A£¬ 30VDC/5A Photo coupling isolation£¬ prevent interference from high voltage circuit Onboard LEDs for indicating relays status Relay control jumper£¬ allows to control the relays by custom pins other than the default pins Comes with development resources£¬ including examples in wiring Pi£¬ WebioPi£¬ shell£¬ python£¬ and bcm2835. Raspberry Pi GPIO interface: for connecting Raspberry PiRelay screw terminal: for connecting target devicesRelaysPhotocoupler: PC817Relay indicatorLED on: relay NC is opened£¬ NO is closedLED off: relay NC is closed£¬ NO is opened Power indicatorRelay control jumper short the jumper: control the relays by default I/Os used in the example codeopen the jumper: control the relays by custom I/Os through jumper wires