Seeed-Grove-Radio-Frequency-RF-&-Wireless-Modules-Seeed-Studio-113060000-P-The-Grove-433 M Hz-Simple-RF-Link-Kit-from-Seeed-Studio-consists-of-one-transmitter-&-one-receiver-&-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-&-use-a-serial-transmit-or-receive-signal-making-it-very-light-in-terms-of-GPIO-pins-P-P-Seeed-provide-technical-documentation-example