Yolink YS7904-UC Operation manual

Water Leak Sensor 2
YS7904-UC
Installaon & User Guide
Rev 1.0

Contents
In the Box ·············································································1
Introducon ·········································································2
Set Up ··················································································5
Installaon ···········································································7
Using the YoLink App ···························································14
················About YoLink Control ······························ ············23
·27Maintenance ···················· ················································
Specificaons ········································ ·····30························
Troubleshoong ·································································31
Warning ·············································································32
Customer Service & Warranty ··············································34

In the Box
1
A. Water Leak Sensor
B. Sensor Cable
C. Mounng Hook
D. Quick Start Guide
C.
A.
D.
B.

Introducon
The YoLink Water Leak Sensor 2 is a smart water detector, that can detect the presence or absence
of water, and can either
2
In water le ak dete c on mo de , p r o vi de ea rl y wa rn in g o f wate r l e a k s o r fl o o d i n g b efore
cos t l y p ro pe rt y d am age oc cu rs
In water level detecon mode, provide nofica on of no water, for super vision of water
supplies for pets, house plants, greenhouses, horculture/agricult ure, and so on
Depending on your applicaon for the sensor, a choice of cable is required. The sensor cable
(included) can be used for both detecon modes, but it is ideal for water leak detecon mode.
The water sensor probe (sold separately) is ideal for water level detecon mode
Cable Types: (see illustraons, next page)
The sensor cable detects water along the length of the cable, while the water sensor probe
detects water only at the probe at the end of the cable
Depending on the water leak or level detecon mode, the sensor LED will blink red and the
sensor sounder will emit loud alarm tones. Noficaons will be sent to you via the YoLink app
(available noficaons types are: email, text/SMS and push/banner noficaons on your Apple
or Android smartphone, each configurable in app sengs)
Operaon & Noficaons:

3
Phono Jack
Used for extending sensor
cable
Status LED
* Not visible while there is no
operaon with the SET buon
or while device is in normal
monitoring status
Sensor Cable
Used for water detecon
SET Buon
Phono Plug
Detector Probe
Used for water detecon
or low water level warning
Phono Plug
Mounng Hole
OR You can Replace the Sensor Cable with a
Water Sensor Probe Instead
(Oponal, Sold Separately)
Alarm Tones
One Beep
Device power-up / buon pressed
Two Beeps
Warning
(Two beeps every 2 seconds for
the first minute. Two beeps every
5 seconds for the next 12 hours.
Sustaining two beeps once a
minute aer 12 hours)
Phono Jack
Used for sensor cable
extension
Wall-Mounng Slot
Baery Compartment
Includes two AAA
non-rechargeable
baeries

The LED light indicates the current status of the sensor:
4
Blinking Green
Connecng to Cloud
Fast Blinking Green
Establishing Connecon with YoLink System (YoLink Control)
Slow Blinking Green
Updang
Fast Blinking Red
Removing Connecon to YoLink System (YoLink Control)
Blinking Red Once
Leak or Flooding Warning (water leak detecon mode)
Water Exhausted Warning (water level detecon mode)
Blinking Red And Green Alternately
to Factory DefaultRestoring

Set Up
Set Up - First-Time YoLink Users (Exisng users proceed to Add Device, next page)
* Get ready: your W LeakTo set up and use ater Sensor 2, you will need an Apple iPhone or tablet that is iOS 9.0 or higher, or an Android phone
or tablet that is Android 4.4 or higher
Follow the steps below to set up your Water Leak Sensor 2 via the YoLink app
Download YoLink app through Apple App Store or Google Play Store
Log in or create a new account if required
Download, and log
in to YoLink app
1
* Make sure your hub is connected to the
internet (green LED indicator is
blinking, blue LED indicator is
always on)
Set up YoLink Hub
2
YoLink Hub is required to set up your Water Leak Sensor 2. Please set up your YoLink Hub first
(refer to YoLink Hub manual)
* Ethernet patch cable (included) to your network
(router, switch, etc.), recommended, but oponal.
Otherwise connect your Hub to your home Wi-Fi
network. Refer to the Hub set up manual for more
informaon:
YS1603-UC_User Guide 5
Power
Adapter
Hub
SET

Add Device
Press the SET buon (on front of sensor) once, the Status LED will blink several mes (red,
then green). The green LED indicates the device is online and ready to use
Tap “ ” buon, then scan QR Code on the device
Press the SET buon
(on front of sensor) once
2
SET Buon
* Status LED will blink
red once, then green several
mes(If device is working well
with connecon to the cloud, it will
blink red once only)
Tap “ ” buon
to add devices
1
6

Installaon
The mounng hook is very difficult to relocate aer being affixed to the mounng surface. Test
your locaon before affixing the mounng hook to the surface. Use masking or painters sensor
tape to secure the mounng hook to the surface. Once you have the mounng hook temporarily
mounted then hang the sensor on the hook, test out the sensor. With the app in hand, follow the
Device Alerts secon on page to test water warning and warning removed using the app and 17
observing the status of the sensor as shown on the app (Water Warning or Water Warning
Removed). Oponally, you may set up your automaon (e.g. turn off a valve when water is
detected) to funconally test the alert of the sensor - proceed to the following steps for
informaon on creang automaons, then return to this step
Test the Sensor Locaon Before Installaon
This sensor is not waterproof and is designed and intended only for indoor use. Subjecng this
device to outdoor environment condions such as direct sunlight, extreme hot or cold
temperatures, rain, water and/or condensaon can damage the device and will void the warranty
If flooding is a risk mount the sensor at a higher locaon, where it is less likely to get wet (which
may render it non-funconal)
Please refer to device environmental operaon range on page 30. Use this device outside the
recommended ranges at your own risk
7
Avoid allowing the Water Leak Sensor 2 to be exposed to strong impacts or vibraon
Please add the Water Leak Sensor 2 to the YoLink app before installaon

Depending on your applicaon for the sensor, determine the opmal locaon for the sensor
cable (recommended) or water leak probe:
Select Your Sensor Locaon (Water Leak Detecon Mode):
8
Pl a c e t h e ca bl e di rec tl y u n de r t h e p o t en al s o u rc e of a wate r l ea k (for exa m p l e , un de r a d i s hwa sh er o r
water h eate r)
Place th e cable on t h e flo o r at a locaon w here floodin g is possibl e (for example, nex t to a sump p ump o r
sub-gra de d o or in a b a sement)
If pos sible, locate the cable where it will not be disturbe d by foot traffic or pets
As basement floors may be sloped to allow
for drainage of water, for earliest warning
select a locaon that is at a lower point
rather than a higher point on the floor
Suggested Addional Applicaons:
Basement Floors
Under Laundry Machines
Under Dishwashers
Under Refrigerators (w/Ice Machines)
Near Sump Pumps
Under Fish Tanks/Aquariums
Inside Hot Tubs*
Locaons Subject to Freezing Pipes*
Depending on your applicaon for the sensor, determine the opmal locaon for the water
leak probe (recommended) or sensor cable:
Select Your Sensor Locaon (Water Level Detecon Mode):
Place the water le a k probe cable wi t h the probe in t h e wate r, posioned j u st b e l ow the accepta b l e water
level (so that when the water level recedes, an al e r t will be sent)

Clean the installaon area
Remove t h e protecve l ayer o n the
double-sided tape on t h e boo m of
th e ho ok , ho ok Pl ac e th e at th e
pre-determ i n e d loca o n th e n p ress
it fir m l y fo r at least 5 seconds
Begin Installaon
Skip to page 12 if you are using a water
sensor probe instead of a sensor cable
Method A: Sensor Cable Installaon
Insert the sensor cable’s phono plug
into the water leak sensor ’s phono
jack as shown
9

Hang the sensor on the hook through
the wall-mounng slot
Ad ju s t th e s e ns or c a b l e, pl a c e it to
wh ere a l e a k o r fl o o d in g m ay o c c ur,
or w h e re t h e wate r l e vel w il l d ro p
* For the water level monitoring, please do not bend the
sensor cable in the detecon area
10

Sensor cable extension
Ins ert add io nal se nso r ca ble s a s s how n ( red high lig hted por on s of th e s ens or ca bl e are the dete c o n
areas ), if need ed (refer to page 30 for th e exten sio n c a ble sp eci ficao n s)
11

These Tools may be Required
Method B: Water Sensor Probe Installaon Insert the water sensor probe’s phono
plug into the water leak sensor’s phono
jack as shown
12
Double-sided
Mounng Tape
Self-tapping
Screw
OR
Nail
OR
Phillips Screwdriver Hammer

A d j u s t th e w a t e r s e n s o r p r o b e ,
placing it to where a leak or flooding
may occur, or where the water level
will drop
* Do not bend the water sensor probe in the detecon area
You can use a screw or nail or double-sided
mounng tape to mount the detector
probe
Hang the sensor on the hook through
the wall-mounng slot
13

Using the YoLink App
Device page (Water Leak Detecon Mode)
Alert interval
* Set re-noficaon interval
aer a leak or flooding warning
Default is 5 minutes
Device name
* Edit name on Details page
* Water detected
14
Device history
Water detected and cleared
events, logged with date & me
Connecon status
of sensor and Hub
Details
* Tap to go to Details page
(refer to page 16)
Baery level
current baery level
* Shown red if replacement is required
Real-me status:
Normal or water-detected

Device page (Water Level Detecon Mode)
15
Alert interval
* Set re-noficaon interval
aer the water exhausted
warning
Default is 5 minutes
Device history
Water detected and cleared
events, logged with date & me
Connecon status
of sensor and Hub
Details
* Tap to go to Details page
(refer to page 16)
Baery level
current baery level
* Shown red if replacement is required
Device name
* Edit name on Details page
Real-me status:
Normal or water-exhausted
* Water exhausted

Details page
* Aer changing “Alert Interval” and / or “Device Mode” and / or “Beep” sengs, press the device’s SET buon
once, to sync the new sengs to the device. Otherwise, the device will automacally update within 4 hours
(maximum)
16
Beep sound
aer a leak or flooding warning
or water exhausted warning
Rename the device
Choose a room
for device
Device type
Alert sengs
* Enable or disable alerts
Alert interval
* Set re-noficaon interval
aer a leak or flooding warning
or water exhausted warning
Default is 5 minutes
Add / remove
from favorites
Device history
Water detected and
cleared events, logged
with date & me
Device status
* Normal, Warning
Device EUI (unique)
Device SN (unique)
Temperature value
* Updates when:
1. SET buon pressed
2. On a device alert
3. Baeries are replaced
4. Automacally within 4 hours
maximum
Connecon status
of sensor and Hub
Baery level
current baery level
* Shown red if replacement is
required
Firmware version
* ” indicates a “#### ready now
new update is available (refer
to page 27)
Device model
* Tap to delete the device from
your YoLink account
Device mode sengs
* Water Leak Monitor:
water leak detecon mode.
Water Exhausted Monitor:
water level detecon mode

Device Alerts
17
Method A: Sensor Cable
Water Leak Detecon Mode
When a ny po int of se n sor ca b le detect s water, an al e rt no  fica on wi l l be se nt , and t h e
sens or statu s will b e sho w n on your Yo Link a pp (s e e page 2 for mo re i n form a o n abo ut
no fi ca o ns)
Note
The default re-noficaon interval aer
a leak or flooding alert is 5 minutes. This
interval may be adjusted in the Details
page (refer to page 16)
Aer a leak or flooding event, please
remove the sensor cable from the sensor
and do not reconnect it unl both the
sensor cable and locaon is dry

Method B: Water Leak Probe
When both ps of the water leak probe are immersed in water, an alert noficaon will be
sent, and the sensor status will be shown on your YoLink app (see page 2 for more informaon
about noficaons)
Note
The default re-noficaon interval aer
a leak or flooding alert is 5 minutes. This
interval may be adjusted in the Details
page (refer to page 16)
Aer a leak or flooding event, please
remove the water sensor probe from
the sensor and do not reconnect it unl
both the water sensor probe and
locaon is dry
18