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15
IOM-S-Leak Defense 2211
2022-03-15
© 2022 Sentinel Hydrosolutions, LLC
The All-Purpose Interface (API) is a device that can inter-
face to various accessories to complement the perfor-
mance of the LDS system, reduce nuisance alarms, and
improve the customer’s experience and satisfaction with
the system. It should be placed within 100’ of the control
panel to maximize signal strength. A few of the common
adaptations and applications are described below.
POLD+ if you were to wire up a POLD sensor to the API
(and it is polarized) the Sensor would have its black wire
going to GND and its red wire going to POLD+. When the
POLD+ goes to GND level, it trips.
To reset the alarm: First make sure that the sensor is com-
pletely dry. Then press and hold the TEST button on the
API for 3 seconds. The LED will go dark until the button is
released and will stay lit until the alarm condition is cleared
at the control panel.
The opto isolators used for HOME/AWAY and STANDBY
have non-committed inputs for maximum flexibility.
The input voltage is not to exceed 12 volts.
The IN+ would need to go to the positive input potential
STEP 15: API-All Purpose Interface
ALL PURPOSE INTERFACE (API)
through a switch or wire.
The IN- would need to go to the negative or GND potential through a switch or wire.
Each opto-isolator has its own IN+ and IN- and they can be wired for high going signals, or GND (low) going signals. The
+REF and -REF signals are used as the voltage references for the optos. +REF usually reads 12VDC, while -REF is GND.
If (for example) you want the STANDBY to activate when its signal is grounded, then you would wire up the IN+ of
STANDBY to the +REF and the IN- goes through a switch or relay to GND. If connecting to an alarm panel, make sure
that the GND’s are the same potential by connecting its GND to the API GND or -REF pins.
If (for example) you wanted to hook up an Alarm Panel that goes to 12 volts when in AWAY mode. Then wire the Alarm
Panel GND and HOME/AWAY IN- to the API GND or -REF and wire the HOME/AWAY IN+ to the 12 volt AWAY trigger
signal. (HOME mode is when the AWAY mode is not activated.)
These are the valid MODE SEL dial position settings:
7 - Relays change on Alarm only
F - Relays change on Alarm and Water off
These are additional MODE SEL dial position settings
(0 - 6 and 8 - E are currently unused):
0 - H/A DIS
STBY DIS
POLD DIS
1 - H/A ENA
STBY DIS
POLD DIS
2 - H/A DIS
STBY ENA
POLD DIS
3 - H/A ENA
STBY ENA
POLD DIS
4 - H/A DIS
STBY DIS
POLD ENA
5 - H/A ENA
STBY DIS
POLD ENA
6 - H/A DIS
STBY ENA
POLD ENA
7 - H/A ENA
STBY ENA
POLD ENA
8 - H/A DIS
STBY DIS
POLD DIS
9 - H/A ENA
STBY DIS
POLD DIS
A - H/A DIS
STBY ENA
POLD DIS
B - H/A ENA
STBY ENA
POLD DIS
C - H/A DIS
STBY DIS
POLD ENA
D - H/A ENA
STBY DIS
POLD ENA
E - H/A DIS
STBY ENA
POLD ENA
F - H/A ENA
STBY ENA
POLD ENA