Water Leak Sensor Manufacturer — Leak Detector OEM/ODM

A water leak sensor costs very little and prevents the single most expensive failure in a home. Insurance claim data consistently puts escape-of-water at the top of domestic losses, well above fire and theft, and the pattern is always the same: a supply hose on a washing machine, a boiler condensate line, or a fitting under a sink that fails slowly while nobody is home. The sensor's whole job is to be there when it happens.

XingLiao builds probe-type water leak sensors, rope sensors and valve-shutoff bundles in Shenzhen, in Zigbee 3.0, Wi-Fi and Matter variants, with 7 to 15 day sampling on existing platforms.

Sensor types and what each is for

The choice is mostly about geometry. A puck detects water in one spot — which is exactly what you want under a washing machine, where the leak will be at the hose. A rope covers a line, which is right for a basement or a long pipe run where the failure point is unpredictable.

Placement: the difference between detecting a leak and detecting it early

• Washing machine and dishwasher: directly beneath the supply hose connection, at the back where the hose meets the valve.
• Under sinks: as close to the trap and supply fittings as the cabinet floor allows, not in the middle of the floor.
• Boilers and water heaters: beneath the unit or inside the drip tray; a remote probe lead helps here.
• Basements and plant rooms: at the lowest point of the floor, or use a rope along the wall with the pipework.
• Toilets: behind the pan, at floor level, where the supply hose enters.

One detail that decides whether the alert is useful: a sensor sitting on a sloping floor may never see a small leak that runs away from it. Place sensors where water will collect, not merely where pipes are.

Alerting: local sound matters more than the app

A notification that arrives on a phone is worthless if the phone is in another city. For this product, a local audible alarm is the feature that stops the damage, because someone in the building hears it and acts. We specify an on-device buzzer at a defined sound level and recommend that models sold for holiday homes and unoccupied properties include it as standard.

The second tier is the app notification, and the third is shutoff. A motorised valve on the main supply, triggered by detection, is the only configuration that actually stops water rather than reporting it. It costs more and needs a plumber to fit, so it is a project and premium-retail product rather than a mass-market one — but in unoccupied properties it is the only version worth installing.

Battery life and the silent-failure problem

A leak sensor sits for years doing nothing, which is precisely why it fails silently: the battery dies, nobody notices, and the device is discovered to be dead at the moment it was needed. This is a worse failure mode than in any other sensor, because the product's value is entirely in the rare event.

We address it with periodic heartbeat reporting to the hub and a low-battery warning in the app, so a dying cell is visible months before it becomes critical. For private-label programmes we also recommend a scheduled replacement interval stated in the manual, because relying on the customer to remember is not a strategy.

Deployment patterns

• Retail multipacks: three or four pucks per box, because one sensor per property is not a solution.
• Apartment blocks: one sensor per wet room, commissioned at handover into the building's gateway.
• Holiday lets and unoccupied homes: sensor plus motorised valve, with a local alarm as backup.
• Plant rooms and basements: rope sensors with cable runs along the pipework.
• Insurance-linked programmes: some insurers offer premium reductions for monitored leak detection — worth checking in your market, as it changes the sales argument entirely.

Private label scope

Standard sensors with your branding start at 500 pieces per colour. Firmware changes — reporting cadence, alarm tone and duration, app branding — begin around 3,000 to 5,000 pieces, with new enclosure tooling at 25 to 40 days.

Leak sensors are usually developed alongside door and window sensors, temperature and humidity sensors and a hub, and sold as a multipack rather than singly.

Certification

CE and RoHS for Europe, UKCA for Great Britain, FCC for the United States, PSE for Japan. Battery variants need UN38.3 documentation. Units intended for outdoor or wet-area installation should carry an appropriate ingress rating — standard indoor pucks are splash-resistant, not submersible, and saying otherwise in the manual is how warranty claims start.

Frequently Asked Questions

Where should I put it?

Where water will collect, under the supply hose or fitting most likely to fail — washing machine, sink trap, boiler, toilet supply. The middle of a floor is the wrong place.

Does it turn the water off?

Not by itself. Detection plus a motorised valve on the main supply does, and that combination is the right answer for unoccupied properties.

Will I know if the battery dies?

Yes. The device sends a periodic heartbeat and reports low battery to the app, so a dying cell is visible well before it becomes critical.

Can one sensor cover a whole basement?

A puck covers one spot. For a large floor or a long pipe run, use a rope sensor along the wall or the pipework.

Does it work without internet?

The local audible alarm always works. Hub-driven scenes run locally too; remote notifications need a connection.

What is the minimum order quantity?

500 pieces per colour on an existing platform; custom firmware or tooling from about 3,000 to 5,000 pieces.

Is it waterproof?

Standard indoor units are splash-resistant, not submersible. They are designed to detect water on a floor, not to sit in it.

Do insurers recognise it?

Some do, and some offer premium reductions for monitored leak detection. It varies by market and is worth checking, because it changes the sales case considerably.