In summary, the STMicroelectronics SPIRIT1 is a flexible, low-power proprietary sub-1 GHz transceiver with an integrated packet handler. It can be used in several frequency bands between 150 MHz and 956 MHz. The SPIRIT1 supports several modulation schemes, including FSK, GFSK, MSK, OOK and ASK. This device features a data rate of up to 500 kbps and power management with an integrated SMPS enabling power consumption reduction and minimizing PCB component count. In addition the SPIRIT1 offers programmable output power up to 11 dBm, programmable channel spacing with a resolution of 12.5 kHz, plus it supports antenna diversity. SPIRIT1 supports several standards, particularly the wireless M-BUS and the 6 Low Pan, and is compliant with several regulations, ARIB for the Japanese market, FCC, EN.