E90-DTU(400SL22-GPRS) Data transmission radio station from wireless radio frequency to GPRS network server
[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.
| No. | Name. | Function |
|---|---|---|
| 1 | Grounding screw | Ground connection |
| 2 | DC-IN | Power adapter interface, power supply range 8~28V, recommended 12V/24V |
| 3 | DC-IN- | Power reference ground |
| 4 | DC-IN+ | Power input, power supply range 8~28V, recommended 12V/24V |
| 5 | Reset | System reset button, long press time no requirement |
| 6 | USB | Micro USB： parameter configuration interface |
| 7 | Reload | Press 4~10s to restore the factory Settings |
| 8 | PWR | Red: power indicator |
| 9 | WORK | Yellow: data transmission indicator light; The light flashes when there is data transmission |
| 10 | LINK | Yellow: network indication, always on after net |
| 11 | NET | 4 G/GPRS antenna interface (SMA - K external thread hole, 50 Ω characteristicimpedance) |
| 12 | SIM | SIM card slot |
| 13 | RF | RF antenna interface (SMA - K external thread hole, 50 Ω characteristic impedance) |