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

Last Updated - 15/12/2025 Sort By:

Best Choice
Tapo

New
Tapo T300 Smart Water Leak Detector, Water Leak Sensor, Drip Leak Alert, Real-Time Notifications, 90 dB Alarm, IP67 Wate
Drip & Leak Alert - Responds to drips and leaks with 6 detection probes on both top and bottom.

£17.99 £22.99
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Best Value
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
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New
💧 BRAND NEW – WiFi Water Alarm, Leak Detector Detection 🚨 CHEAPEST ON EBAY!
Protect your home from water damage with the JEMAY Wifi Water Alarm, the most affordable option on eBay for leak detecti

£8.50
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

£15.99 £19.99
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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

£7.32
Topvico

New
Topvico Water Leak Sensor Detector Flood Alarm for Basement 120dB Work Alone Battery Operated 3 Packs
120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off (easy to hear the a

£12.59
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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

£46.74 £53.99
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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
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
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New
X-Sense WiFi Water Leak Detector – Smart Water Sensor Alarm – Leak Alert
Dispatch usually within 24 hours of receiving order. New & Unused.

£44.95
SEBSON

New
SEBSON 2x 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.

£26.99
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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
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New
Water Alarm Moisture Flood High Level Detector Sensor Bath/Sink Overflow UK
Use by water heater, sink cabinet, sump pump, washing machine, radiators and more;. -Made of durable ABS Plastics. It is

£7.95
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

£16.14 £19.99
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New
High Sensitivity Water Leak Detectors with 13000X Sound Amplification for Home
Sound amplification factor: 13000×. Sensitivity: 0-60dB. Battery capacity: 200mAh.

£8.88
GuDoQi

New
GuDoQi Water Leak Detector, Water Alarm Sensor, 130dB Super Loud Alarm, Battery Operated, 100cm Detection Cable, Leak Mo
Alarms as soon as a leak is detected and does not stop if it is not switched off or removed from the water

£9.99
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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
Smart WiFi Water Leak Sensor Flood Leakage Level Overflow Detector Alarm
WiFi Smart Water Leak Sensor Liquid leakage Alarm Water Overflow Level Detector Flood Leakage Protection. WiFi Water lev

£5.80
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
Reliable Water Leak Detectors Easy to Use Water Wireless Water Alarm
This Water Alarm provides continuous and early detection of water leaks or floods. From kitchens to bathrooms, laundry r

£11.00
New
Water Electrolyzer Water Quality Tester Water Detectors Electrolysis Equipment
Test-Start to test the power switch button on the electrolyzer to the ON position. Finally, switch the power switch to O

£8.88
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
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
Automatic Water Leak Detector 100dB Water Sensor Alarm Flood Detector Home UK
Sound: 100dB. 2/4/6 x Alarm (without battery). High-decibel sound, durable and compact. Solar water heaters, swimming po

£11.92
New
Sound Detection Water Leak Detector Leak Detection Device Water Pipe
Simple Operation:Compact and practical, easy to operate and carry, and suitable for leak detection of various constructi

£6.83

25 Water Detectors deals are available from: Amazon, eBay stores, starting from £5.80.
The biggest discount we found is 10%% on Tapo T300 Smart Water Leak Detector, Water Leak Sensor, Drip Leak Alert, Real-Time Notifications, 90 dB Alarm, IP67 Waterproof, Battery Included, Flexible Installation, Visible Alarm with Tapo Lights at Amazon.
The lowest price we found is £5.80 while the highest is £46.74.
Prices for the best Water Detectors deals average at £19.01.
Last updated on December 15, 2025.
We scanned these quality online stores and more to deliver you with the best offers online available for Water Detectors.