Seeed grove infrared transmitter and receiver 38khz up to 10m seeed studio 101020026 the infrared transmitter from seeed studio operates at 38khz to send infrared signals from up to 10m away depending on the receiver a downloadable ir library handles all the details of sending data from a string of bytes to the transmitter use it as a remote control or as part of a two way communication channel with a suitable ir receiver such as the grove ir emitterseeed provide technical documentation