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CtrlM is an infrared transmitter that works with FreeMs to wirelessly program and control BlinkMs from long distances. It converts BlinkM commands sent over I2C through a LinkM or Arduino into infrared commands that are converted back to the original commands by FreeMs, eliminating the need for conductive cabling.
Its ultra bright, narrow beam infrared LED allows FreeMs to be controlled 45 feet (14 m) away, but can be easily modified to accommodate an external power supply for much greater range, while minimizing interference with other infrared devices.
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This product has been discontinued at SparkFun.
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