I have a device that accepts digital inputs (NO or NC) that triggers different radio codes. Is it possible to control these inputs with outputs on an Arduino, or do I need a relay? If so, is there any alternative to a relay?
This device also accepts analog inputs (threshold mode / sample mode). Is this the inputs I need to use instead? My Arduino operates at 5V, and the analog inputs accepts max 3V. Is regulating the voltage down my only option here?