Best water leak sensors in the UK (under-sink, boiler cupboard, bathroom)
A leak sensor can prevent a costly mess. The key is placement and getting alerts that you’ll actually receive.
Quick picks
Aqara Water Leak Sensor (requires Aqara hub)
Great if you already run Aqara/HomeKit-style setups. Needs a hub.
ASIN: B07D39MSZS
SABRE Wireless Water Leak Flood Alarm Sensor (loud siren)
A cheap ‘local alarm’ option when you mainly want noise, not an app.
ASIN: B00M30SNSQ
X-Sense Wi‑Fi Water Leak Detector kit (base station + sensors)
Good for larger homes if you want a hub/base for range and multiple sensors.
ASIN: B0BJ6B1LPQ
Where to put them (highest value spots)
Start with: under kitchen sink, behind washing machine, boiler cupboard, and any known problem bathroom.
Alerts: Wi‑Fi vs hub vs siren
A local siren is underrated. If Wi‑Fi drops, you still want noise. Hubs can also be more stable than direct-to-Wi‑Fi devices.