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PRM4 Serial Link Modem (Go to Parent Category)

PRM4 Serial Link Modem PRM4 modems can be used to establish a transparent RS-232 / RS-485 / RS-422 link, as if a physical cable had been laid between the two points where the modems are installed. The modems operate in the free 868MHz band, and have a range of between 2 and 16km between two modems (depending on the type of antenna used), with the option to extend the range even further using additional modems set to "repeater" mode.
P.O.R. (Approx. R4,100, please contact us for more information)
Price ex. VAT. Est. Weight: 300g. Stock: Lead-time applicable [i]. Decode Icon

Technical Specifications

Frequency Range ISM 868MHz, according to EN 300 220
Channel Range and Count 25kHz, 80 channels
Transmission Power +13dBm, 20mW
Modulation 2FSK with Gaussian filtration
Radio Signaling Rate 9600bps
Receiver Sensitivity Greater than -115dBm for 10-3 BER
Channel Occupation Time Less than 1%
Range Up to 2km with rod antenna, 16km with high gain antenna, further with repeaters
Serial interface 8 data, None parity, 1 stop bit; 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Serial DB9 Connector Pinout RS-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 Supply 8-32Vdc, 2W
LEDs Power, receive, transmit, error in channel
Temperature range -20°C to +75°C, 0 to 95% RH (non condensing)
Protection IP50
Dimensions 86 x 57 x 26 mm
Mounting Desktop, or optional mounting for 35mm DIN rail