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

Last Updated - 24/03/2026 Sort By:

Best Choice
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.

£17.99 £22.99
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
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
15% Off
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

£16.99 £19.99
New
2 In 1 Nitrate Tester& Water TDS Meter TFT Color Display Food Nitrate Detector
TDS Detection: This tester is equipped with alloy probe for quick TDS testing, suitable for testing drinking water, swim

£126.93
Best Value
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

£41.98 £53.99
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

£9.70
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
New
Professional Water Leak Detector Sensor for Home Water Pipeline Maintenance
This Water Leakage Detector Is A Very Essential Tool For Plumbing Engineers. Water Leakage Detector Adopts New Component

£10.79
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
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
Tuya Smart WiFi Water Leak Sensor Flood Leakage Level Overflow Detector Alarm UK
Tuya WiFi Smart Water Leak Sensor Liquid Leakage Alarm Overflow Level Detector Flood Protection SmartLife APP. Tuya WiFi

£5.95
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

£18.32 £20.09
New
Tuya Smart WiFi Water Leak Sensor Flood Leakage Level Overflow Detector Alarm UK
Tuya WiFi Smart Water Leak Sensor Liquid Leakage Alarm Overflow Level Detector Flood Protection SmartLife APP. WiFi Wate

£5.95
18% Off
SwitchBot

New
SwitchBot WiFi Water Leak Detector, No Hub Required (Support 2.4G), Smart Water Detector 100dB Adjustable Alerts & App A
Real-time Notifications (No Hub Needed): After connecting to Wi-Fi, you will be able to receive real-time email and app

£13.99 £16.99
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

£6.44 £6.78
New
Water Leak Sensor Flood Leakage Detector Overflow Alert Level Home Alarm
This highly responsive water leak detector features instant alert technology.

£5.99
New
Smart WiFi Water Leak Sensor Flood Leakage Level Overflow Detector Alarm
Loud Local Alarm for Instant Warning.

£5.90
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
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
LeakBot 3.0 Smart Water Leak Detector for Android iOS Brand New Sealed RRP £149
Wi-Fi compatible - LeakBot syncs to your phone via the free LeakBot app. Easy to install - No plumbing or extra tools re

£39.99
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
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
New
Water Pipe Leak Detector Compact Rechargeable Wall Water Leakage Tester For New
EASY TO CARRY: Water pipe leak detector is compact and portable, suitable for various construction pipeline leak detecti

£17.98

25 Water Detectors deals are available from: Amazon, eBay stores, starting from £5.50.
The biggest discount we found is 22% on X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Kitchens, Basements, Bathrooms, 3 Water Detectors & 1 Base Station, SWS54 at Amazon.
The lowest price we found is £5.50 while the highest is £126.93.
Prices for the best Water Detectors deals average at £20.69.
Last updated on March 24, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Water Detectors.