PRM 4

Packet Radio Modem

Features

  • Packet radio modem for ISM 868MHz frequency range
  • Serial interface RS-232 DCE
  • Serial interface RS-422 or RS-485, 2 wire or 4 wire, with or without termination
  • Range up to 2km with rod antenna and up to 16km with high gain antenna
  • LED indications for power supply, receive, transmit and error in channel
  • Optional mounting for 35mm DIN rail

Description

PRM 4 is packet radio modem intended for wireless transfer of serial protocols in unlicensed ISM 868MHz frequency range. It has RS-232 DCE, as well as two wire or four wire RS-422 or RS-485 interface. On front panel there are LED indications for power supply, receive, transmit and error in channel. Range up to 2km is achieved with small rod antenna and up to 16km with high gain antenna. Device power supply range is 8-32Vdc. PRM 4 is shipped in desktop version or with optional 35mm DIN rail mounting carrier.

Application

Packet radio modem of fourth generation can be used in industrial environment where there are no conditions for wire interconnecting of communication equipment, as it is with moving and rotating machines, natural and artificial barriers, as well as in situations where simple and fast interconnection is requested without mounting of additional wires. It enables interconnection of several communication devices in wireless network, with range extension thanks to repeater working mode. AT command interface is intended for parameters setting.

TECHNICAL SPECIFICATION

Frequency rangeISM 868MHz, according to EN 300 220
Channel range and number 25kHz, 80 channels
Transmit power+13dBm, 20mW
Modulation2FSK with Gaussian filtration
Radio signaling rate9600bps
Receiver sensitivitybetter than -115dBm for 10-3 BER
Channel occupation timeless than 1%
Rangeup to 2km with rod antenna, 16km with high gain antenna
Serial interface8 data, None parity, 1 stop bit
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Serial connector DB9 DCERS-232: Tx, Rx, RTS, CTS, DTR, DSR, DCD, RI, GND
RS-422: Tx+, Tx-, Rx+, Rx-, GND (2W/4W selectable)
RS-485: Tx+, Tx-, Rx+, Rx-, GND (2W/4W selectable)
Termination 120 Ohm for RS-422 and RS-485 selectable
Power supply8-32Vdc, 2W
LED indicationspower supply, receive, transmit, error in channel
Temperature range-20°C to +75°C, 0 to 95% RH (non condensing)
ProtectionIP50
Dimensions86 x 57 x 26 mm
Mountingdesktop or optional mounting for 35mm DIN rail

ORDERING INFORMATION

ModelSKUDescriptionPrice 
PRM 410171

Packet radio modem for ISM 868MHz frequency range

€200

*Minimum functionality kit needs to include the device, appropriate power supply and antenna. Please note that all accessories are sold separately.

ACCESSORIES

ModelSKUDescription Price 
ANT-868-S

10293

868Mhz Swivel antenna, 2.2 dBi, SMA

€7
ANT-868-BQA

10266

868Mhz BiQuad antenna, 10 dBi, SMA, cable 5m

 €80
PS-1212-AD

10261

AC/DC adapter, DC12V 12W, AC100-240V 50/60Hz

€8 
PS-2415-DIN

23601

Power supply, DIN rail mount, DC24V 15W, AC85-264V 50/60Hz

 €11
CB-DB9MF-2M

21745

Serial Cable Assembly 1.8~2m, DB9 Male to DB9 Female

€4 
ENCL-DIN35-H1

20271

35mm DIN Rail Holder, Aluminium

€2.50 

Product Documents