I/O Connector
Picolo Tymo provides an internal 20-pin header connector: I/O.
This connector offers five solid-state relay outputs OUT1, OUT2, OUT3, OUT4 and OUT5, and four contact-closure inputs IN1, IN2, IN3 and IN4.
I/O connector
(PCB viewed from top)
Note. Each input and output line is composed of a pair of wires. There is no polarity between the two wires of one pair and both wires can be used indifferently as positive or negative terminal.