25LC128
SI4021 (2)SI402 (7)SI40 (39)SI4 (1072)

Silicon Labs

SI4021-A1-FT

RF Transmitter FSK, OOK 433MHz, 868MHz, 915MHz 8dBm 512kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)
Silicon Labs

SI4021-A1-FTR

RF Transmitter FSK, OOK 433MHz, 868MHz, 915MHz 8dBm 512kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)

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