Inovonics EN1751 Installation Instructions Download Page 2

10.25.16 06809A © Inovonics, 2016 - www.inovonics.com 

2

16.

Use staples or tape to secure the wiring between the EN1751 water 
detector and the FP280 probe.

17.

Test the EN1751 and FP280 per section 3, “Testing the EN1751 Water 
Detector”.

3 Testing the EN1751 Water Detector

The EN1751 water detector should be tested weekly and after registration 
to ensure operation.
To test the EN1751 water detector:

1.

Inspect to ensure both the EN1751 and FP280 are securely mounted 
and the wiring is still secured.

2.

Submerge the FP280 probe in 1/4” of non-distilled water and ensure an 
appropriate response.

When testing has completed, you will need to reset the EN1751. To reset 
the EN1751:

1.

Remove the EN1751 water detector from the mounting bracket.

2.

Use your thumb to depress the housing release tab on the bottom of the 
transmitter; separate the housing.

3.

Press the reset button.

4.

Replace the housing and return the transmitter to the mounting bracket.

4 Operation

The primary alarm, alarm0, is sent when the EN1751 detects water; the 
other two alarms, alarm1 and alarm2, and the tamper message are sent in 
the following cases:

Note: 

If an alarm0 message is sent and no water is present, inspect the 

wiring at the probe terminal block to ensure that there is no short.

Note: 

The EN1751 water detector cannot reliably detect frozen water.

5 Specifications

Dimensions: EN1751: 3.5” x 1.7” x 0.9”; FP280: 1.5” x 1.0” x 0.375”.
Battery type (BAT604): Panasonic CR123A or equivalent.
Battery life: 3 to 5 years.
Operating temperature: 34° to 140°F.
Humidity: 0 to 90%, non-condensing.

Note: 

Specifications and data are subject to change without notice.

6 Television and Radio Interference

This equipment has been tested and found to comply with the limits for a 
Class B digital device, pursuant to Part 15 of the FCC Rules. These limits 
are designed to provide reasonable protection against harmful interference 
in a residential installation. This equipment generates, uses and can 
radiate radio frequency energy and, if not installed and used in accordance 
with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not 
occur in a particular installation.  If this equipment does cause harmful 
interference to radio or television reception, which can be determined by 
turning the equipment off and on, the user is encouraged to try to correct 
the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to 

which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

7 FCC Part 15 and Industry Canada Compliance

This device complies with part 15 of the FCC Rules and Industry Canada 
license-exempt RSS standard(s). Operation is subject to the following two 
conditions: (1) this device may not cause interference, and (2) this device 
must accept any interference, including interference that may cause 
undesired operation of the device. Changes or modifications not expressly 
approved by the party responsible for compliance could void the user's 
authority to operate the equipment.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables 
aux appareils radio exempts de licence. L'exploitation est autorisée aux 
deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, 
et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique 
subi, même si le brouillage est susceptible d'en compromettre le 
fonctionnement.

Note: 

Changes or modifications not expressly approved by the party 

responsible for compliance could void the user's authority to operate the 
equipment.

8 US Patent Numbers

• 7,154,866.
• 7,554,932.
• 7,746,804.
• Other patents pending.

Condition

Message

Ambient temperature at or above 
140°F.

The alarm1 message will be 
sent.

Ambient temperature at or below 
-4°F.

The alarm2 message will be 
sent.

Honeywell FP280 probe 
disconnected from Inovonics 
EN1751 water detector

The tamper message will be 
sent.

Draft

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