Elpro 105U-1 Radio Telemetry Modem. Provides a Radio and Serial port with 4 Digital inputs and 4 outputs, 2 Analogue inputs and 2 outputs, 1 Pulse input and 1 output. Both Analogue inputs will accept a 4-20mA signal, with one able to control a digital output. Power Supply 11-30vDC or 15-24vAC. Standard 458Mhz frequency at 500mW, line of sight range up to 10Km, suitable for UK use. Extruded Aluminium DIN Rail mountable housing, dimensions 130 ...