SPZB32W1x1.4 is a 2.4 GHz IEEE 802.15.4 compliant SMD module based on the ST STM32W chipset, featuring an integrated 2.4 GHz transceiver, PHY and MAC IEEE 802.15.4 features, ARM® Cortex-M3 core, embedded Flash and RAM, encryption (AES-128) accelerator, up to 20 dBm nominal TX output power, up to 105 dBm RX sensitivity, 16 channels (IEEE 802.15.4 channel 11 to 26), multiple configurable interfaces (UART, SPI, I2C, ADC, GPIOs), industry standard JTAG programming, 24 MHz and 32.768 kHz stable Xtal, less than 2 µA typ. power consumption in deep sleep mode (32.768 Xtal), multiple antenna options (integrated antenna or integrated UFL connector), multiple protocol stack options, single voltage supply (2.1 to 3.6 V), FCC and CE compliant qualified, small form factor (16.4 x 26.5 mm), operating temperature range: -40 °C to +85 °C.