Conrad GX107 Mode D'emploi page 71

Opto Coupler Input (IN1 - IN2)
Input IN1 is an opto coupler can serve, for example, as smoke detector or burglar alarm (current
loops that are interrupted).
A voltage of 0 to 32 V can be connected to the input isolated from the rest of the circuit. Please
observe correct polarity (plus/+ and minus/-)!
Without any external voltage (that is, open) or with a voltage of less than 2V, this input (IN1)
is recognized as low level. If an external voltage of more than 2.3 V is connected, the input (IN1)
is recognized as high. Use the SMS command to select when an alarm message is to be sent.
Alarm message when changing from LOW=L to HIGH=H
SET IN1 LH #1513
Alarm message when changing from HIGH=H to LOW=L
SET IN1 HL #1513
Alarm message for each level change
SET IN1 LHL #1513
Deactivate alarm through IN1:
SET IN1 OFF #1513
Reset to default settings (LH):
RESET IN1 #1513
To check the input (IN1) recorded in the "GX107", send the following SMS command:
TEST IN1 #1513
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