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Seeed Grove - Radio Frequency (RF) and Wireless Modules - Seeed Studio 113020001, The Grove - 315MHz Simple RF Link Kit from Seeed Studio consists of one transmitter and one receiver and is useful for remote control projects that don't require two-way communication. To attach one of these modules to a microcontroller simply plug into a Grove base board and use a serial transmit or receive signal, making it very light in terms of GPIO pins.Seeed provide technical documentation, example projects and software libraries on their product pages. if you require this information please visit this product's page. Seeed 113020001 Grove - 315MHz Simple RF Link Kit Transmitter and Receiver ASK