[Chip solution]： SX1268

[Transmission power]：37dBm

[Communication distance]： 25km

[Product size]： 50*30.9mm

[Introduction]：E22-400T37S is a new generation of based on SX1268 radio frequency chip wireless serial port module (UART), with a variety of transmission methods ,working in (410.125~493.125MHz)frequency band (default 433.125MHz), LoRa spread spectrum technology,TTL Level output, support 4 5 V - 15V supply voltage