You can input up to 30 Volts DC to the extra dry contacts, as long as you have them configured as opto isolated. See Question #1 in the “How Do I” section of this knowledge base for instructions on how to set the dry contacts to opto isolated mode
You can input up to 30 Volts DC to the extra dry contacts, as long as you have them configured as opto isolated. See Question #1 in the “How Do I” section of this knowledge base for instructions on how to set the dry contacts to opto isolated mode