Radio system, transmission of I/O data in star topology, gateway with RS485 interface, operating voltage 10.30 VDC, max. range 3200000 mm, external antenna (RG58 RP-SMA connection), external terminal block, integrated signal strength indicator, configuration via DIP switch, Modbus RTU communication, RS485 interface, deterministic data transmission, frequency hopping FHSS, time division multiplexing TDMA, transmission power: 63 mW, 18 dBm conducted, = 20 dBm EIRP, alternative register assignments, inputs: 2 x PNP, 2 x 0..20 mA, outputs: 2 x PNP, 2 x 0.20 mA, power consumption: < 60 mA at 24 VDC