RFU-433 433 MHz RF Wireless Modem with RS-232/485 Port
433 MHz radio modem that carries transparent serial data between RS-232 or RS-485 devices over line of sight, up to 500 m at 9600 bps RF rate. DIN-rail mountable.
- 433 MHz RF link with 16 selectable RF channels and 8 RF baud rates
- Wireless line of sight range of up to 500 m at 9600 bps RF baud rate
- RF baud rate adjustable down to 650 bps for noisy or harsh environments
- Transparent transmission mode for RS-232 or RS-485 serial data
- Serial baud rates from 1200 to 115200 bps with N81, E81 and O81 formats
- PA switch to enhance RF power, default 10 dBm, maximum 19 dBm
€165.00 per piece
| 1–9 pcs | €165.00 | |
|---|---|---|
| 10–30 pcs | €160.00 | −3 % |
| 31+ pcs | €157.00 | −5 % |
Product information "RFU-433 433 MHz RF Wireless Modem with RS-232/485 Port"
The RFU-433 CR is a serial-to-radio modem for the 433 MHz ISM band. It takes data from an RS-232 or RS-485 device and sends it over a wireless link in transparent transmission mode, so engineers can extend serial connections without running cable between the two points. With a line of sight range of up to 500 m at a 9600 bps RF rate, it suits short-to-medium distance links between plant equipment, buildings or remote sensors.
Reliability in difficult radio conditions is built around configurable parameters. The RF baud rate can be lowered to 650 bps to improve noise resistance, and 16 RF channels and 8 Group IDs let adjacent networks be kept apart. Most settings are made with the rotary and DIP switches rather than software, which makes a like-for-like replacement straightforward.
The modem includes a PA switch to increase RF output, with a default of 10 dBm and a maximum of 19 dBm. Serial ports support 1200 to 115200 bps, N81, E81 and O81 data formats, and photocoupler isolation of 2500 Vrms on the serial side. The unit is rated for -25 ~ +75 °C operation and mounts on a DIN rail.
Applications
- Wireless serial links between RS-232 or RS-485 devices
- Data transfer in harsh or electrically noisy environments at reduced RF baud rates
- Co-located wireless networks that need separate channels or Group IDs
- Replacement of an existing RFU-433 modem with minimal reconfiguration
| Product type: | RF wireless modem |
|---|---|
| Interface: | RS-232/RS-485 |
| Protocol: | Transparent transmit |
| Ports: | 1 |
| Isolation: | 2500 Vrms (photocoupler) |
| Operating temperature: | -25 ~ +75 °C |
| Mounting: | DIN-rail |
| Housing: | Fire retardant materials |
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 | 57600 bps ~ 650 bps |
| Configuration | Rotary and DIP switch |
| Group ID | 0 ~ 65535 |
| Protocol | Transparent transmit |
| Radio Frequency | 433.1000 ~ 434.6000 MHz |
| Temporary Buffer Size | 512 Bytes |
| Transmission Power | Default 10 dBm, Max 19 dBm |
| Transmission Distance (LoS) | 500 m (at 9600 bps RF Rate and 10 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 |
| Environment | |
| Operating Temperature | -25 ~ +75 °C |
| Storage Temperature | -30 ~ +80 °C |
| Humidity | 10 ~ 95% RH, Non-condensing |
Specifications as published by the manufacturer. Subject to change.
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