The General Input Unit incorporates 4 input channels for measuring digital, 0-1V, 0-5V, 0-10V, 0-20V, 0-20mA, 4-20mA, 500 ohm, 1k ohm, 3k ohm and 10k ohm thermistor inputs. The unit triggers a C-Bus group address or broadcasts a message on the C-Bus Network in response.