---
product_id: 46162760
title: "Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs"
brand: "topvico"
price: "€ 24.12"
currency: EUR
in_stock: true
reviews_count: 13
category: "Topvico"
url: https://www.desertcart.ie/products/46162760-water-leak-sensor-detector-120db-37-8-inches-cable-3
store_origin: IE
region: Ireland
---

# 120dB piercing alarm 2-year battery standby 37.8-inch extendable cable Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs

**Brand:** topvico
**Price:** € 24.12
**Availability:** ✅ In Stock

## Summary

> 💧 Don’t let leaks sneak up—hear the alert before the damage hits!

## Quick Answers

- **What is this?** Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs by topvico
- **How much does it cost?** € 24.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/46162760-water-leak-sensor-detector-120db-37-8-inches-cable-3)

## Best For

- topvico enthusiasts

## Why This Product

- Trusted topvico brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Dual mounting options with adhesive stickers for quick, no-fuss installation
- • **Long-Lasting Power:** Optimized low-power design offers up to 2 years standby on a single 9V battery
- • **Instant Flood Alert:** 120dB alarm cuts through noise to protect your space immediately
- • **Premium Sensitivity:** 24K gold-plated sensor board ensures ultra-responsive water detection
- • **Extended Reach Detection:** 37.8-inch cable with DIY extension up to 150+ feet for hard-to-access leaks

## Overview

Topvico’s Water Leak Sensor Detector delivers high-sensitivity water detection with a loud 120dB alarm and a 37.8-inch extendable cable, ensuring early flood warnings in hard-to-reach areas. Designed for easy installation and long-lasting battery life, this 3-pack offers reliable, cost-effective protection for homes, apartments, RVs, and commercial spaces.

## Description

Topvico Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs | Flood Alarm for Basement, Under Sink, Sump Pump, RV, Kitchen, Water Heater, Apartment Management, Moisture, Battery Operated - desertcart.com

Review: Exactly what I needed - I needed something basic; the contact, a long enough wire to go where it needed to be, and a switch with an off button instead of digging out the battery. This fits the bill at a great price for a pack of three. I set one beside my washing machine which is upstairs, one underneath the front of my refrigerator because the ice dispenser randomly leaks water and I want to catch it in the act, and the third by my clawfoot tub which does not have a shower curtain around it. The alarm is loud, high pitched, and sounds somewhat feral. It will definitely get your attention.
Review: Low Budget Cost but Effective! - For the second time in 10 years, our dishwasher had a slow leak that eventually led to noticeably cupped hardwood flooring. Ughh. After replacing the hose fitting, I decided to install some sort of early warning leak detection system to prevent these slow, floor-soaking events from happening again. I started out thinking "high end, WIFI, Apple compatible etc. and even ordered one. After receipt, I found out I needed a special app that I didn't have and didn't want, so I returned it unopened. I then decided to take the dirt-cheap approach and purchased 3 of these for $15. After receipt, I remember installing a battery to test one and began wondering if I could do so without breaking it. They are not tough, solid, bullet-proof, and robust. They have a "low cost" character to them (no surprise). But they are good enough for normal handling and care. However, much to my delight, I found out that simply touching their sensor with a damp q-tip swab was enough to set them off. Yeah! I have seen too many videos of people pouring a cup of water on a sensor to show that they work. These low cost devices are VERY SENSITIVE! Plus, they are old school (reliable) hard wired so no need for wifi headaches. Plenty Loud too. I needed to extend the wires, which was easily done with solder and heat shrink tubing. So now I have two redundant systems. One goes to a small plastic cup under the problematic hose fitting to the dish washer, and the other is attached to the flooring just behind the dishwasher. The two alarm units are mounted under the kitchen sink. My plan is to replace batteries on a rotating 3 month schedule and to load test the removed batteries to build confidence in what their life actually is, then lengthen replacement life as I safely can. Not fancy. Not expensive. No more damaged hardwood floors. Met my needs!

## Features

- Loud 120dB Alarm for Immediate Alerts: The powerful 120dB alarm notifies you as soon as a leak is detected. The alarm continues until the water dries or the sensor is turned off, ensuring you don't miss a potential flood, even from the basement. A cost-effective solution to prevent water damage in homes and businesses
- High-Sensitivity 24K Plated Sensor: Equipped with a premium 24K plated detection board for maximum sensitivity (if you no need high sensitivity, please try "B0BYHS79W5" with similar cost). Designed for repeated use - simply dry the sensor board after activation, and it's ready to use again
- Upgraded Easy Installation with Dual Mounting Options: Features a double-sided adhesive sticker for effortless installation. One part secures the alarm unit, while the other attaches the water detection board. Choose from two mounting styles, as shown in the product images, to best fit your needs. Suitable for install in RV, fixed well with stickers, not move when driving
- Extended Cable Length for Hard-to-Reach Areas: Comes with a 37.8-inch cable, easily extendable by the user up to over 150 feet using standard electrical wire (wire not included). Designed to detect water in hard-to-reach corners, suitable for monitoring rising water levels in sump pumps. Suitable for use in basements, near water heaters, underground spaces, washing machines, kitchens, RVs, and more
- Battery-Powered with Maximum Efficiency: Equipped with upgraded low-power circuitry, standby mode for up to 2 Years with a standard 9V alkaline battery (not included). Our optimized energy-saving technology ensures minimal power draw when not triggered, reliable protection with fewer battery changes. We recommend using a quality brand-name alkaline battery for consistent, optimal performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07311Z536 |
| Audible Noise | 120 db |
| Battery Description | Alkaline |
| Best Sellers Rank | #34,894 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Water Detectors & Alarms |
| Brand | Topvico |
| Built-In Media | Water detect board |
| Color | White |
| Control Method | App |
| Customer Reviews | 4.4 out of 5 stars 1,901 Reviews |
| Item Dimensions L x W x H | 3.82"L x 1.77"W x 0.87"H |
| Item Highlight | Flood Alarm for Basement, Under Sink, Sump Pump, RV, Kitchen, Water Heater, Apartment Management, Moisture, Battery Operated |
| Item Weight | 1.76 ounces |
| Manufacturer | Topvico |
| Manufacturer Warranty Description | 24 months |
| Mfr Part Number | TP-206W |
| Model Number | TP-206W-3 |
| Mounting Type | Floor Mount |
| Number of Batteries | 1 9V batteries required. |
| Number of Items | 3 |
| Number of Packs | 3 |
| Power Source | Battery Powered |
| Product Dimensions | 3.82"L x 1.77"W x 0.87"H |
| Sensor Technology | Water Detection Sensor |
| Size | 3 Pack (120dB/37.8" Cable) |
| UPC | 603894417086 |
| Unit Count | 3 Count |
| Voltage | 9 volts |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** Topvico
- **Color:** White
- **Power Source:** Battery Powered
- **Product Dimensions:** 3.82"L x 1.77"W x 0.87"H

## Images

![Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs - Image 1](https://m.media-amazon.com/images/I/61D1ty6YU7L.jpg)
![Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs - Image 2](https://m.media-amazon.com/images/I/71NkwOVvHOL.jpg)
![Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs - Image 3](https://m.media-amazon.com/images/I/81Hk8ZF+aGL.jpg)
![Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs - Image 4](https://m.media-amazon.com/images/I/611j1UGKwHL.jpg)
![Water Leak Sensor Detector, 120dB, 37.8 Inches Cable, 3 Packs - Image 5](https://m.media-amazon.com/images/I/61PevAE9znL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what I needed
*by T***N on August 3, 2026*

I needed something basic; the contact, a long enough wire to go where it needed to be, and a switch with an off button instead of digging out the battery. This fits the bill at a great price for a pack of three. I set one beside my washing machine which is upstairs, one underneath the front of my refrigerator because the ice dispenser randomly leaks water and I want to catch it in the act, and the third by my clawfoot tub which does not have a shower curtain around it. The alarm is loud, high pitched, and sounds somewhat feral. It will definitely get your attention.

### ⭐⭐⭐⭐⭐ Low Budget Cost but Effective!
*by M***P on June 21, 2025*

For the second time in 10 years, our dishwasher had a slow leak that eventually led to noticeably cupped hardwood flooring. Ughh. After replacing the hose fitting, I decided to install some sort of early warning leak detection system to prevent these slow, floor-soaking events from happening again. I started out thinking "high end, WIFI, Apple compatible etc. and even ordered one. After receipt, I found out I needed a special app that I didn't have and didn't want, so I returned it unopened. I then decided to take the dirt-cheap approach and purchased 3 of these for $15. After receipt, I remember installing a battery to test one and began wondering if I could do so without breaking it. They are not tough, solid, bullet-proof, and robust. They have a "low cost" character to them (no surprise). But they are good enough for normal handling and care. However, much to my delight, I found out that simply touching their sensor with a damp q-tip swab was enough to set them off. Yeah! I have seen too many videos of people pouring a cup of water on a sensor to show that they work. These low cost devices are VERY SENSITIVE! Plus, they are old school (reliable) hard wired so no need for wifi headaches. Plenty Loud too. I needed to extend the wires, which was easily done with solder and heat shrink tubing. So now I have two redundant systems. One goes to a small plastic cup under the problematic hose fitting to the dish washer, and the other is attached to the flooring just behind the dishwasher. The two alarm units are mounted under the kitchen sink. My plan is to replace batteries on a rotating 3 month schedule and to load test the removed batteries to build confidence in what their life actually is, then lengthen replacement life as I safely can. Not fancy. Not expensive. No more damaged hardwood floors. Met my needs!

### ⭐⭐⭐⭐ LOUD! 9v battery powered, long cord, works great!
*by D***W on June 1, 2024*

I got this for a friend who had a water inlet valve problem on her washer. If we had this little $5 unit in place, there would've been less flooding on her laundry room floor. I like that this comes with everything you need except a 9v battery. It has double stick tape for the control unit and the sensor. You get a pack of 3 for around $15. Cheap insurance! I tested it by putting the sensor under the kitchen faucet. Wow! It's Loud! A nice feature is that it has an on/off switch. Not sure why you'd need it because you'll always want it 'on', but that's handy. I guess if it's going off, you don't want it screaming at you while you mop up the water. This is good for any type of water / liquid overflow. It could be the laundry room, under sink pipes, whatever you can imagine. The cord to the sensor seems long enough. You could always splice more cord into it to make it longer and I'll bet it will work just fine. I was glad to find these in a 3 pack even though I only needed 1. I'm sure you'll come up with other places where a water / liquid sensor could be useful.

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-09-25*