RF chip The SX1278 mainly uses a TM remote modem for ultra-long-range spread spectrum communication with high anti-interference and minimizes current consumption. With patented TM modulation technology, the SX1278 has a high sensitivity of over -148dBm, +18dBm power output, long transmission distance and high reliability. At the same time, compared with the traditional modulation technology, TM modulation technology has obvious advantages in anti-blocking and selection, and solves the problem that the traditional design scheme can not take into consideration the distance, anti-interference and power consumption at the same time.