“$A5,0,0,3, „Y‟ <I/0 Port>‟ ” (7 bytes)
Turns the two internal closures on and off. Closure 1 is typically used to control the optional
buzzer, Closure 2 typically used to control an external camera power relay.
“$A5,0,0,3, „Y10‟” turns Closure 1 off
“$A5,0,0,3, „Y11‟” turns Closure 1 on
“$A5,0,0,3, „Y20‟” turns Closure 2 off
“$A5,0,0,3, „Y21‟” turns Closure 2 on
"$A5,0,0,2,'SP'" (6 bytes)
Queries the Head-End for the number of devices present on the network and the number of
devices expected.
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