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[Frequency] : 410~441 MHz
[Power] : 30dBm
[Distance] : 20km
[Interface] : RS232/RS485
[Introduction] : E90-DTU is a wireless data transceiver with the function of digital data processing,digital modulation and demodulation,FEC,balanced soft decision,etc.It provides transparent RS232/RS485 interface,different with the analog FM transceiver plus MODEM analog digital transceiver.
PinNumber Name Function Description 1 DB-9 Femal socket RS-232 interface Standard RS-232interface 2 3.81 connectingterminal RS-485, powerinterface Standard RS-485 andscrewing interface 3 PWR-LED Power indicator Red when powered-on 4 TXD-LED Transmitting indicator Yellow, it flasheswhen transmitting data 5 RXD-LED Receiving indicator Yellow, it flasheswhen receiving data 6 DC power interface Power interface Straight hole, outerdiameter:5.5mm, inner diameter:2.5mm 7 DIP switch DIP switch Working mode control 8 Antenna interface SMA-K External thread hole.L: 10mm. 50Ωresistance. RF Parameter Value Remark Working frequency 410~441 MHz Default: 433MHz
Transmitting power 37 dBm About 5W
Air data rate 0.3k~19.2kbps Default: 2.4kbps
Test distance 20000 meter In open and clear air, with maximum power, 5dBi antenna gain, height of 2m.
Hardware Parameter Value Remark Size 124 * 105 * 25 mm Without SMA-K
Antenna type SMA-K Communication interface RS232 / RS485 Standard DB9 Hole/3.81 connecting terminal
Baud rate 9600 Baud rate: 1200~115200
Buffer 512 bytes buffer Automatically sub-packaging with 197 bytes per package
<Electronic parameter Min. Typ. Max.