[Frequency]：410.125~493.125MHz

[Power]：22dBm

[Distance]：5km

[Transmission]：GPRS

[Interface]：RF to GPRS

[Weight]：255±5g

[Introduction]：E90-DTU (400SL22-GPRS) is a data transmission station from radio frequency to GPRS network server, which realizes the transparent data transmission between sub-1g and GPRS network. The sub-1g radio frequency transceiver is based on SEMTECH SX1262 radio frequency chip and supports LoRa spread spectrum technology.