11.24.20 357-00043-01 Rev A © Inovonics, 2020 - www.inovonics.com 2
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 probe are securely mounted
and the wiring is still secured.
2. Submerge the 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, alarm 1, is sent when the EN1751 detects water; the
other two alarms, alarm 2 and alarm 3, as well as the tamper message, are
sent in the following cases:
Note: If an alarm 1 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, rated 3VDC.
Typical battery life: 8 years at a 5 minute transmission interval.
Operating temperature: -4° to 140°F.
Humidity: 0 to 90%, non-condensing.
Operating frequency: 902-928 MHz.
Regulatory compliance: FCC; RoHs compliant; Industry Canada; RCM.
Note: The transmitter output power level is the same for North America,
Australia and New Zealand.
Note: Inovonics supports recycling and reuse whenever possible. Please
recycle these parts using a certified electronics recycler.
Note: Specifications and data are subject to change without notice.
Caution: Changes or modifications not expressly approved by Inovonics
could void your authority to operate the equipment.
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 Innovation, Science and
Economic Development Canada (ISED)
Compliance
This device complies with part 15 of the FCC Rules, and ISED 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 that may cause undesired operation of the
device.
Le présent appareil est conforme aux CNR Innovation, Sciences et
Développement économique 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.
8 Radiation Exposure Limits
8.1 FCC
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. In order to avoid the possibility of exceeding the
FCC radio frequency exposure limits, human proximity to the antenna shall
not be less than 20 cm during normal operation and must not be co-located
or operating in conjunction with any other antenna or transmitter.
8.2 ISED
This equipment complies with ISED RSS-102 radiation exposure limits set
forth for an uncontrolled environment. This transmitter must be installed to
provide a separation distance of at least 20 cm from all persons and must
not be co-located or operating in conjunction with any other antenna or
transmitter.
Cet équipement est conforme avec ISED RSS-102 des limites d'exposition
aux rayonnements définies pour un environnement non contrôlé. Cet
émetteur doit être installé à au moins 20 cm de toute personne et ne doit
pas être colocalisé ou fonctionner en association avec une autre antenne
ou émetteur.
Condition Message
Ambient temperature at or above
140°F.
The alarm 2 message will be
sent.
Ambient temperature at or below
-4°F.
The alarm 3 message will be
sent.
Probe disconnected from Inovonics
EN1751 water detector
The tamper message will be
sent.