M5Stack Cap CC1101 Sub-1 GHz RF and NFC for Cardputer Adv and CardputerZero - 315/433/868/915 MHz

Key features

• DUAL WIRELESS FUNCTIONS: Integrates a Sub-1 GHz RF transceiver (CC1101) and NFC (ST25R3916) into one compact expansion module for Cardputer-Adv and CardputerZero.
• MULTI-BAND RF COVERAGE: Operates across 315, 433, 868, and 915 MHz bands with built-in dual SP3T RF switches routing all bands to a single RP-SMA antenna interface.
• VERSATILE MODULATION & STRONG SENSITIVITY: Supports 2-FSK, 4-FSK, GFSK, MSK, ASK, and OOK modulation schemes with RX sensitivity up to -99.5 dBm and +10 dBm TX power.
• NFC READER, WRITER & CARD EMULATION: ST25R3916 chip supports ISO14443A/B, FeliCa, and ISO15693 protocols in both reader/writer and card emulation modes via SPI interface.
• COMPACT & EXPANDABLE: Measures 3.31 x 0.94 x 0.78 inches and weighs 0.52 oz, with a HY2.0-4P Grove interface for easy sensor module expansion.