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E90-DTU(2G4L27) RS232/485 lora wirelss modem







[Introduction]:E90-DTU (2G4L27) is a data transceiver with military-grade LoRa modulation technology. With multiple transmission modes, it works in the frequency band (default 2424MHz). The transceiver provides transparent RS232/RS485 interface and supports 8~28V voltage input.

No. Name Function Note
1 DB-9 female socket RS-232 interface Standard RS-232 interface
2 3.81 terminal block RS-485, power interface Standard RS-485 interface and pressure line power interface
3 PWR-LED Power LED Red, lit when the power is on
4 LINK-LED Data transceiver LED Yellow, the connection is successful
5 DATA-LED Serial data LED Yellow, flashing during data transmission
6 DC power interface Power interface In-line round hole, outer diameter 5.5mm, diameter 2.5mm
7 DIP switch Mode selection M1=upward dialing, configuration mode when M0 isarbitrary, M1=downward dialing, transparent transmissionmode when M0 is arbitrary
8 Antenna interface SMA-K interface external thread, 10mm, 50Ωcharacteristic impedance