25LC128
SI4020-I1-FT (2)SI402 (7)SI40 (39)SI4 (1072)

Silicon Labs

SI4020-I1-FT

RF Transmitter FSK, OOK 315MHz, 433MHz, 868MHz, and 915MHz 3dBm 256kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)
Silicon Labs

SI4020-I1-FTR

RF Transmitter FSK, OOK 315MHz, 433MHz, 868MHz, and 915MHz 3dBm 256kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)

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