A two channel signal converter with isolation and CAN bus is designed for diesel engine control systems, industrial automation, vehicle automation, and machine control integration. The signal converter accepts two analog current or voltage signals, resistive or digital inputs, PWM or frequency/RPM inputs and converts them into 2 analog, PWM, frequency or digital signal outputs. A +5V reference powers sensor inputs. The unit has 4-way isolation between power, inputs, outputs and CAN. The I/O control includes CAN bus automation for SAE J1939 12Vdc or 24Vdc control systems or CANopen networks. It can be installed in control panels, industrial control automation systems, power generator set control systems, off-highway equipment, construction machines, and test equipment.