Check the listing for details. 4Pcs Digital 38khz Ir Receiver Sensor Module + 4Pcs 38khz Ir Transmitter Sensor. Condition: New. Listed at 12.81 USD. 4Pcs Digital 38khz Ir Receiver Sensor Module + 4Pcs 38khz Ir Transmitter Sensor Module Kit for Electronic Building Block. - The infrared transmitter module is directly transmitted by a single tube, and the waveform needs to be modulated by the program.
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