It’s a SX1278 LoRa module with SPI interface. The RC-SM1278-433 module is designed based on Sx1278. The SX1278 incorporates the LoRaTM spread spectrum modem which is capable of achieving significantly longer range than existing systems based on FSK or OOK modulation. At maximum data rates of LoRaTM the sensitivity is 8dB better than FSK, but using a low cost bill of materials with a 20ppm XTAL LoRaTM can improve receiver sensitivity by more than 20dB compared to FSK. LoRaTM also provides significant advances in selectivity and blocking performance, further improving communication reliability. For maximum flexibility the user may decide on the spread spectrum modulation bandwidth (BW), spreading factor (Sf) and error correction rate (CR). Another benefit of the spread modulation is that each spreading factor is orthogonal - thus multiple transmitted signals can occupy the same channel without interfering. This also permits simple coexistence with existing FSK based systems. Standard GFSK, FSK, OOK, and GMSK modulation is also provided to allow compatibility with existing systems or standards such as wireless MBUS and IEEE 802.15.4g. • LoRaTM Modem • 168 dB maximum link budget • +20 dBm - 100 mW constant RF output vs. V supply • Programmable bit rate up to 300 kbps • High sensitivity: down to -148 dBm • Excellent blocking immunity • Low RX current of 12 mA, 200 nA register retention • Fully integrated synthesizer with a resolution of 61 Hz • FSK, GFSK, MSK, GMSK, LoRaTMand OOK modulation • Built-in bit synchronizer for clock recovery Preamble detection 127 dB Dynamic Range RSSI Automatic RF Sense and CAD with ultra-fast AFC Packet engine up to 256 bytes with CRC Built-in temperature sensor and low battery indicator Applications • Automatic Measure Reading. • Home and Building Automation. • Wireless Security Systems. • Home and Building Automation Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for Pag- 1 / 6 any possible lack or inaccuracy of the data and reserves the right to change in whole www.raflloComro||l.com or in part these information without

2.0 Technical Specifications Characteristics Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for any possible lack or inaccuracy of the data and reserves the right to change in whole or in part these information without notice.

RC-SM1278-433 Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for any possible lack or inaccuracy of the data and reserves the right to change in whole or in part these information without notice.

RFO_LF PA_BOOST GND VR_PA VBAT_RF GND RFO_HF SCK MISO MOSI NSS RXTX_RF GND SCK MISO MOSI NSS RXTX/RFMOD RFI_HF nRESET XTB XTA VR_DIG VBAT_ANA VR_ANA RF1_LF Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for any possible lack or inaccuracy of the data and reserves the right to change in whole or in part these information without notice.

6.0 Reccomended Reflow Profile for Lead Free Solder Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for any possible lack or inaccuracy of the data and reserves the right to change in whole or in part these information without notice.

Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for Pag- 6 / 6 any possible lack or inaccuracy of the data and reserves the right to change in whole www.raflloComro||l.com or in part these information without notice.