Instructions

12
NOTE : the relay is switched on when the level reaches S1 (HIGH LEVEL) and is then switched off when the
level falls under S2 (LOW LEVEL)
ATTENTION : The relay contacts are rated at 3 Amps max.
ALARM
Link the pins of sensor S1 to the pins of sensor S2 as follows :
1) link the pin near C5 to the pin near C6
2) link the pin near C4 to the pin near C7
Connect pins adjacent to C4 and C5 to a sensor. When dry, LD3 illuminates (Fig 7.0). When wet, LD1 and LD4 will
illuminate and the relay is energized (Fig 7.1). The NORMALLY OPEN contact gives a “wet” alarm signal. The
alarm will keep going for as long as the detected condition is present. Multiple sensors may be connected in
parallel.
Applications
S1
LD3
NC
RELAY
S2
NC
NO
C
To Main
PCB
LD4
LD1
NO
C
NC
RELAY
Fig 7.0 Fig 7.1