Best Water Detectors Deals Online in the UK (25 Deals Found)

Last Updated - 19/02/2026 Sort By:

Best Choice
SEBSON

New
SEBSON 3x Water Alarm Mini GS153, 10 year long term battery, water detector 60x60x24.2mm, sensor with lithium battery
Water detector GS153 with permanently installed 10 year lithium long-term battery.

£37.99
Tapo

New
Tapo T300 Smart Water Leak Detector, Water Leak Sensor, Drip Leak Alert, Instant Notifications, 90dB Alarm, Waterproof,
Drip & Leak Alert - Responds to drips and leaks with 6 detection probes on both top and bottom.

£22.99
New
LeakBot Smart water leak detector for iOS + Android Brand New Sealed RRP £149
LeakBot takes less than 5 minutes to fit, you don’t need any tools or plumbing know how. It really is easy. It’s not mag

£38.99
SwitchBot

New
SwitchBot WiFi Water Sensor No Hub Required, Smart Water Leak Detector 100dB Adjustable Alerts & App Alerts, IP67 Waterp
Real-time Notifications (No Hub Needed): After connecting to Wi-Fi, you will be able to receive real-time email and app

£18.99 £19.99
New
LeakBot Smart water leak detector for Android, iOS Brand New Sealed Rrp £149
LeakBot takes less than 5 minutes to fit, you don’t need any tools or plumbing know how. It really is easy. It’s not mag

£44.99
Best Value
X-Sense

New
X-Sense Wi-Fi Water Sensor, Smart Water Leak Detector with App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, B
Note: to use the app features, you must also have the SBS50 base station (not included)

£9.51 £15.99
SEBSON

New
SEBSON Water Alarm Mini GS153, 10 year long term battery, water detector 60x60x24.2mm, sensor with lithium battery
Water detector GS153 with permanently installed 10 year lithium long-term battery.

£15.99
New
Wifi Water Leak Sensor Flood Leakage Detector Overflow Alert Level Home Alarm
IP67 waterproof water leakage detector probe. Wall-mounted, easy to use. Removable battery, easy for installation, low p

£9.50
X-Sense

New
X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Ki
Real-Time Notifications: When a water leak is detected, a push alert will be sent to your phone, so you’ll be alerted qu

£55.99
New
Water Leak Sensor Flood Leakage Detector Overflow Alert Level Home Alarm
This highly responsive water leak detector features instant alert technology.

£5.99
erdiegle

New
Erdiegle Water Leak Detector, 135dB Water Sensor Alarm Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens,
🔔【24/7 Peace of Mind】The water alarm is a must-have for homeowners, providing peace of mind and great protection for an

£10.99
15% Off
Aqara

New
Aqara Water Leak Sensor, REQUIRES AQARA HUB, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System
NOTES: Aqara Hub is required and sold separately. Requires a secured 2. 4 gigahertz WiFi network connection. One Aqara H

£16.99 £19.99
New
Leakage Alarm Detector Water Leak Sensor Bath Tub Sink Overflow Detector 120dB
Detector 120dB. Extra Loud Alarm – 110dB siren alerts you instantly, even from another room. 1 × Water Leak Alarm (Batte

£5.50
Smartwares

New
Smartwares Mini Water Alarm - Extra Thin - 3 Year Battery - FWA-18210
PREVENT WATER DAMAGES : water leaks can cause major damage, especially if you notice the leak late because you've been a

£7.98
New
Smart Water Alarm Sensor Detector Bathroom Tub Sink Overflow
1 Piece Water Alarm Sensor. We'd like to settle any problem in a friendly manner. Probe: Water Sensor. The sensor uses 2

£6.78
SONOFF

New
SONOFF SNZB-05P Zigbee Water Leak Sensor with Detection Cable, Wireless Water Leak Detector for Alarm System and Smart H
【Leaking & Dripping Detection】The elevated probe design can detect a 0.5mm liquid level and allows for use on metal surf

£20.09
New
Water Leak Sensor Leak Detector Overflow Water Level Leakage Alarm Sensor UK
💡Easy to Use: Just place the sensor on the floor near potential leak sources —no wiring or setup required.

£7.69
New
Smart WiFi Water Leak Sensor Flood Leakage Level Overflow Detector Alarm
Loud Local Alarm for Instant Warning.

£5.97
New
High Sensitivity Water Leak Detectors with 13000X Sound Amplification for Home
Sound amplification factor: 13000×. Sensitivity: 0-60dB. Battery capacity: 200mAh.

£8.44 £8.88
New
Water Leak Detector with built in Auto Shut Off
The leak detector features an integrated automatic shut-off feature - so if the worse happens and a leak is detected - t

£42.50
New
5 In 1 Digital Water Quality Tester Pen EC PH Salinity Temp Meter/Detector UK
【HIGH ACCURACY PH TESTER】- The glass probe of this pH tester is made of low-resistance glass sensitive film, and the res

£15.82
New
Water Leakage Detection Underground Water Pipe Leak Monitor Detector w/ Earphone
Water Pipe Leak Detector Sensor Kit with Dual Probes & Earphone - Ultimate Water Pipeline Locator Security Kit . Ensure

£34.69
New
Water Leak Detector - Flood Water Level Sensor Detectors - Bath Alarm Overflow
HIGHLY EFFECTIVE water alarm sensor can be used as bath overflow alarm, liquid, bed wet or rain alert. LIGHTWEIGHT & DUR

£14.99
New
New Wireless Water Detectors Battery Operated Leak Alert Water Leak Alarm 90dB
Press mute button when you find leak. Ultra-Loud 90dB Alarm. Once it detects water leak or drip, loud 90dB sound lasts o

£40.33
New
Genuine LeakBot Smart water leak detector for Android, iOS - Brand New RRP £149
LeakBot takes less than 5 minutes to fit, you don’t need any tools or plumbing know how. It really is easy. It’s not mag

£43.99

25 Water Detectors deals are available from: Amazon, eBay stores, starting from £5.50.
The biggest discount we found is 41% on X-Sense Wi-Fi Water Sensor, Smart Water Leak Detector with App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, SBS50 Base Station Required, SWS0A, 1-Pack at Amazon.
The lowest price we found is £5.50 while the highest is £55.99.
Prices for the best Water Detectors deals average at £21.75.
Last updated on February 19, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Water Detectors.