OLIMEX© 2015
MOD-IO2 user's manual
5.2.2 Male connector
The male connector is used with the ribbon cable in the package to connect to another male UEXT
or to connected to another MOD-IO2
Male UEXT
Pin #
Signal name
Pin #
Signal name
1
+3.3V
6
SDA
2
GND
7
Not connected
3
Not connected
8
Not connected
4
Not connected
9
Not connected
5
SCL
10
Not connected
5.3 Relay output connectors
There are two relays in MOD-IO. Their output signals are the standard Normal Closed (NC),
Normal Open (NO) and the Common (COM).
REL1 – OUT1
Pin #
Signal name
1
NO – normal open
2
NC – normal closed
3
COM – common
REL2 – OUT2
Pin #
Signal name
1
COM – common
2
NO – normal open
3
NC – normal closed
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