The cheapest sensor in the house guards the most expensive damage · review
Two water alarms at 135 dB, which Vaileal states can be laid on the floor or hung on a wall, with no wiring, no buttons and no programming — the lid opens, the battery goes in, and it works.
The conclusion Two units and 135 dB, against 85 dB for the ABUS. The obvious buy if the sound must travel.
This one is the loudest in this hub, and comes in pairs.
A leak detector’s job is to be heard from wherever you actually are, which is usually not the utility room. Through a closed door, down a hallway, up from a cellar, an 85 dB unit is a faint chirp and a 135 dB one is unmissable.
At one meter in a bathroom the same figure is painful, which is the honest trade. Decide by where the sound has to travel, not by the number.
Floor is the default: the probes touch the water as soon as it arrives. Vaileal also states wall mounting, without saying how the probes then reach the floor; check the manual before choosing it.
A 9 V battery, with up to three years of standby stated — the listing also mentions “one year” of protection, which calls for caution. At the slightest contact with water, the 135 dB alarm sounds until the probes dry or the battery runs flat; replace the battery when the alarm gets quieter.
Tell you when you are out. It is a local alarm like almost everything in this hub, and an empty house hears nothing. That is the argument for the connected detector at the top of this hub, and against it is that this pair costs a third as much.
Two locations, and a household that has already failed to hear a quieter one.
Not found on the American Amazon store, where the buy link falls back to a local search rather than to a page that does not exist.
Prices and availability are what Keepa reported on the date this page was updated; both move.
| Alarm | 135 dB, stated by Vaileal |
|---|---|
| Contents | 2 detectors |
| Mounting | Floor or wall |
| Setup | No wiring, no buttons, no programming |
| Battery | 9 V battery; up to 3 years of standby stated |
| Detection | Slightest moisture on the probes; sounds until dry or the battery is flat |
| Amazon reference | B0D3LCZYLQ |
| EAN | 0766156846861 |
At one meter in a bathroom, yes — it is genuinely painful. Through a closed utility room door, down a hallway, from a cellar, it is what makes the difference between an alarm that is heard and one that is not. Consider where the sound has to travel before deciding it is too much.
Vaileal states it can be hung on a wall to detect leaks, without saying how the probes then reach the floor. Check the manual before relying on that mounting; on the floor, the probes touch the water as soon as it arrives.
The two places water most often appears in your particular house. For most that is the washing machine and the water heater; for a house with a basement, the cellar floor is one of them.
7.5/ 10
Two units and 135 dB, against 85 dB for the ABUS. The obvious buy if the sound must travel.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
Two locations at once, where the alarm has to be heard through a closed door.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
85 dB · two floor probes · stands on the floor · basement, laundry, kitchen, utility room
A standalone water alarm that stands on the floor with two probes underneath. ABUS states an 85 dB tone that sounds as long as the probes are in contact with water or another conductive liquid.
Best for: The floor beside a washing machine, a dishwasher or a water heater.
90 dB · three units · two electrodes on the base · wall or floor · ABS
Three water alarms at 90 dB with two electrodes on the base, which GOMETY states trigger immediately on contact with water. Wall or floor mounting, in ABS plastic, with no wiring or programming.
Best for: Covering three risks at once — the usual number in a house with a basement.
85 dB · sealed 10-year lithium battery · miniature floor sensor
A miniature floor sensor with a sealed lithium battery that SEBSON states lasts ten years. No battery to change, and no battery compartment to corrode.
Best for: A place you will not revisit — under a bath, behind a built-in appliance, beside a boxed-in water heater.
