429 MHz RF Wireless Modem with 1-port RS-232/RS-485

RFU-400

429 MHz RF Wireless Modem with 1-port RS-232/RS-485

  Price:  $319.00  

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Features

  • 429/433 MHz Radio Frequency
  • 16 RF Channels
  • 4 RF Baud Rates
  • Includes a PA switch that can be used to enhance the RF power
  • Wireless line of sight (LOS) transmission range of up to 1000 meters at an RF Baud Rate of 9600 bps
  • Transparent transmission mode
  • 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 Temperatures, -25 °C ~ +75 °C

RoHS WEEE

Introduction

The RFU-400 is an RS-232/RS-485 to 429 MHz radio modem that can be used to convert data from an RS-232/RS-485 device to an RF message that can then be transmitted in transparent mode via the 429 MHz ISM frequency band. The RFU-400 provides a maximum line of sight (LOS) transmission distance of 1000 meters (1 km) at an RF Baud Rate of 9600 bps. In order to overcome the interference that may be encountered in harsh environments, the RFU-400 allows the RF transmission Baud Rate to be configured to a minimum of 650 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 when attempting to avoid interference encountered when two RFU-400 networks are adjacent. The 16 RF channels and 8 Group IDs can be configured in order to distinguish and control the different RFU-400 networks. The majority of these configuration parameters can be adjusted using a combination of the Rotary and DIP switches, thereby providing a simple method of maintaining the system if the RFU-400 modem needs to be replaced.

Applications

RFU-400-APP

Specifications

Isolation
Intra-module Isolation 2500 Vrms for photocoupler (RS-485/RS-232 side)
EMS Protection
EFT (IEC 61000-4-4) +/- 1 kV
ESD (IEC 61000-4-2) +/- 4 kV Contact
Surge (IEC 61000-4-5) +/- 1 kV
LED Indicators
Status 1 x RF_Tx
1 x RF_Rx
1 x PWR
RF
Antenna 0 dBi Omni directional
Baud Rate 115200 bps ~ 650 bps
Configuration Rotary and DIP switch
Group ID 0 ~ 7
Protocol Transparent transmit
Radio Frequency 429.1750 ~ 429.9250 MHz
RX Sensitivity 433.1000 ~ 434.6000 MHz
Temporary Buffer Size 512 Bytes
Transmission Power Max 19 dBm
Transmission Distance (LoS) 1000 m (at 9600 bps RF Rate and 19 dBm Tx Power)
COM Ports
Ports 1 x RS-232 (TxD, RxD and GND)
1 x RS-485 (D+, D- ; 3000 VDC for DC-to-DC)
Baud Rate 1200 ~ 115200
Data Format N81, E81, O81
Power
Consumption 1 W (Max.)
Mechanical
Casing Fire Retardant Materials
Dimensions (mm) 108 x 84 x 33 (W x L x H)( not include antenna )
Installation DIN-Rail
Environmental
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +85°C
Humidity 10 ~ 95% RH, Non-condensing

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