Then connecting the NC wires (blue and yellow) to alarm input liked this.
By default it is Closed Circuit Triggered and this water leak detector is NO, therefore, you need to change the input zone from NC to NO by default, then when there is water leakage, the poles touching ground closed, it will alarm.
the SMS for this example, as the NC connecting to second Wired Input
123456#67#1#Wired zone 1#1#
66 is the 1st wired zone, so 67, 68, 69 and 70 are 2nd, 3rd, 4th, 5th zone.
1st 1 is activate this zone
2nd 1 is open circuit alarm ( 0 is closed circuit alarm )