Features
■ Frequency bands: – 413-479 MHz – 826-958 MHz
■ Modulation schemes: – 2(G)FSK, 4(G)FSK – OOK, ASK
■ Air data rate from 0.1 to 500 kbps
■ Ultra-low power consumption: – 10 mA TX @ +10 dBm
■ Programmable RF output power up to +16 dBm
■ Programmable channel spacing
■ Fast start-up and frequency synthesizer settling time
■ Battery indicator and low battery detector
■ TX 128 bytes FIFO buffers
■ 4-wire SPI interface
■ ST companion integrated filter chips are available
■ Fully integrated ultra-low power RC oscillator
■ Wake-up driven by internal timer or external event
■ Flexible packet length with dynamic payload length
■ IEEE 802.15.4g hardware packet support with whitening, FEC, CRC
■ Wireless M-BUS supported
■ Enables operations in the SIGFOX™ network
■ Suitable to build systems targeting: – Europe: ETSI EN 300 220, ETSI EN 303 131 – US: FCC part 15 and part 90 – Japan: ARIB STD T67, T108 – China: SRRC
■ Operating temperature range: -40 °C to +105 °C

Applications
■ Sensors to Cloud
■ Smart metering
■ Home energy management systems
■ Wireless alarm systems
■ Smart home
■ Building automation
■ Industrial monitoring and control
■ Smart lighting systems Maturity status link S2-LPTX Sub-1 GHz proprietary radio transmitter S2-LPTX Datasheet DS13100 - Rev 1 - September 2019 For further information contact your local STMicroelectronics sales office.