Mounting; Optically - Isolated Digital Inputs - Polygon Technologies Micro Commander GC0101 User Manual

5.7. Mounting

The Micro Commander is housed in a very durable ABS casing which has 4 protruding tabs, which
allows it to be mounted firmly to any surface by means of a screw. There is also a DINrail mounting
kit available separately.
Please note: The Micro Commander is not water- or weatherproof. The Micro Commander must be
mounted indoors, or inside an appropriate IP65-rated weatherproof enclosure. The guarantee does
not cover damage resulting from water ingress! DO NOT mount the Micro Commander inside a steel
cabinet, unless you also mount a separate antenna on the outside of the cabinet.
Suitable antennas can be ordered from Polygon Technologies.

5.8. Optically - Isolated Digital Inputs

The Micro Commander itself provides 1 signal inputs. The input has the following 4 terminals:
+
– Internal positive supply (14V)
+IN
– Positive input
–IN
– Negative input
–
– Internal negative supply (Zero volts)
To connect a switch or contact to an input, simply connect the switch between the + and +IN
terminals, and a wire between the – and –IN terminals. The reverse is just as suitable, i.e. that you
connect a wire between + and +IN and place the switch between – and –IN.
You may need an input to activate when power is supplied from some other unit. A good example
will be a burglar alarm that applies power to the wires going to the siren. In such a case, it will be a
simple matter of connecting the positive wire to the +IN input, and the negative wire to the –IN
input.
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