Introduction
The RM868500A radio modem acts as a wireless serial cable replacement and can wirelessly connect various devices
together for a large range of applications. The RM868500A radio modems operate in the license free SRD G3 Band
(869.525MHz) band and is capable of achieving long range line-of-sight communications up to 40km (w/ 2.0dBi dipole
antenna). With its stylish aluminum extruded enclosure and industrial temperature grade electronics makes the unit
perfect for industrial automation/SCADA systems and remote data acquisition. The RM868500A also includes 128 bit
AES encryption technology for secure wireless data transfer.
The RM868500A can operate in a point to point or point to multipoint configuration.
Features
• Transparent wireless link. The modem acts as a serial cable replacement
• License free operation in the SRD G3 Band (869.525mHz)*
• Long Range – indoor/urban (+-550m/1800ft), outdoor/line-of-sight (+-40km/25 miles). With a 2.0dBi dipole
antenna
• Stylish anodized aluminum extruded enclosure with mounting flanges
• 8-30VDC switch mode power supply with built in 33V over voltage and reverse voltage protection
• 6W maximum power consumption
• Programmable transmit power of up to 500mW (20dBm) EIRP with a 2.0dBi antenna
• Supports point to point and point to multipoint configuration
• Easy interfacing via snap in connector
• Built in LED’s for power, transmit, receive and signal strength indication
• RSSI (received signal strength indicator) to give optimum antenna placement
• RPSMA (reverse polarity SMA) 50 ohm antenna connection allows for remote location of antenna
• Available in RS232, RS485 and 4-wire RS422, includes a selectable built in line termination resistor
(RS485/RS422 model only)
• Serial interface data rate of 1200 to 115200 bps
• Industrial operating temperature range (-40°C to 85°C)
• Uses an agency approved radio module (Europe (CE)) *
• Free configuration software
*Maximum transmit power output levels and local radio frequency regulator bodies must be obeyed in the country of
operation.
RM868500A
868MHz 500mW RS232 / RS485 / RS422 Radio
Modem
Operating Manual – English 1.01
