Led Output; Digital Inputs - NetComm NTC-220 User Manual

LED Output

An LED can be controlled by simply providing an open collector ground to an externally powered LED Resistor
value and Voltage will need to suit the LED type used. Alternatively, an LED can be powered using 8V2 via 1K
resistor. The suitability of the LED will need to be investigated.

Digital inputs

There are several ways to connect a digital input. A digital input can be anything from a simple switch to a digital
waveform or pulses. The unit will read the voltage in as an analogue input and the software will decode it in a
certain way depending on your configuration.
Below is a contact closure type input, which is detecting an Earth. Pull up is activated for this to work.
The following input detects an input going high. The turn on/off threshold can be set in the software.
NTC-220 – User Guide
UG01028 v1.2 March 2019
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© NetComm Wireless 2019