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RFU-900
RS-232/RS-485 to LoRa Radio Modem
 
 
~ Available soon ~
Model: RFU-900
 
  • LoRa (Long Range) transmission technology
  • Transparent transmission mode
  • 32 RF channels (Frequency band : 864~ 871.5MHz, 915~ 922.5MHz)
  • 7 RF baud rates (10,000 ~ 250 bps)
  • Provides baud rates from 1200 to 115200 bps for both the RS-232 and RS-485 interfaces
  • ESD protection: Contact +/-4 kV
  • Isolation: 3000 VDC for DC-to-DC, 2500 Vrms using a photocoupler
  • DIN-Rail mountable
  • Operating temperature, -25 °C ~ +75 °C
 
The RFU-900 is a RS-232/RS-485 to radio device designed for remote communication operating in a transparent way and exploiting the physical layer of LoRa (Long Range) transmission technology. The RFU-900 provides a maximum line of sight (LOS) transmission distance of 1500 meters at an RF bit rate less than 1000 bps. In order to overcome the interference that may be encountered in harsh environments, the RFU-900 allows the RF transmission bit rate to be configured to a minimum of 250 bps, enhancing the capability of the modem to resist noise and other interference. Additionally, the RF channels and Group IDs are adjustable, which is helpful to avoid interference encountered when two RFU-900 networks are adjacent. The RF channels and the Group IDs can be configured in order to distinguish and control the different RFU-900 networks.
 
 
RF Interface
Radio Frequency 864~ 871.5MHz, 915~ 922.5MHz (channel: 32, recommend using 868 +/- 4 MHz)
Baud Rate 10,000 ~ 250 bps
Transmission Power 15 dBm (Max.)
Antenna 2 dBi Omnidirectional Antenna
Transmission Distance up to 1500 m (with 1000 baud, in free field conditions)
Group ID 0~255
Protocols Transparent transmit
Temporary Buffer Size 200 bytes
Configuration Dip/Rotary switch or Utility tool
COM Port Interface
COM Port RS-232 x 1, RS-485 x 1
Baud Rate (bps) 1200 ~ 115200
LED Indicators
Red/Green/Yellow Power/RF Tx/RF Rx Status
Power
Required Supply Voltage +10 VDC ~ +30 VDC
Power Consumption 1 W (Max.)
Mechanical
Dimensions (W x L x H) 108 mm x 84 mm x 33 mm (not include antenna)
Installation DIN-Rail
Environment
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +80°C
Relative Humidity 10 ~ 90% RH, Non-condensing
 
RFU-900 CR RS-232/RS-485 to LoRa Radio Modem (RoHS)
 
ANT-109-01 ~ Available soon ~ 2 dBi, 824 ~ 960 MHz External Antenna
3S001-1 RG58A/U 1 Meter Long RP-SMA male to RP-SMA Female Cable
 
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