---
product_id: 492437238
title: "Compact 110 dB Water Alarm w/360° Sensing Technology (BW-WA360)"
brand: "the basement watchdog"
price: "HK$264"
currency: HKD
in_stock: true
reviews_count: 9
category: "The Basement Watchdog"
url: https://www.desertcart.hk/products/492437238-compact-110-db-water-alarm-w-360-sensing-technology-bw
store_origin: HK
region: Hong Kong
---

# 360° water detection 110 dB piercing alarm battery-saver tech Compact 110 dB Water Alarm w/360° Sensing Technology (BW-WA360)

**Brand:** the basement watchdog
**Price:** HK$264
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of leaks with 360° vigilance and a roar that can’t be ignored!

## Quick Answers

- **What is this?** Compact 110 dB Water Alarm w/360° Sensing Technology (BW-WA360) by the basement watchdog
- **How much does it cost?** HK$264 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/492437238-compact-110-db-water-alarm-w-360-sensing-technology-bw)

## Best For

- the basement watchdog enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Sleek 2⅜" x 1" x 3¼" design fits discreetly in tight spots like sump pits, under sinks, or near appliances.
- • **All-Around Leak Guardian:** Patented 360° sensing detects water on any side, catching leaks before they flood your space.
- • **Energy Smart, Always Ready:** Battery-saver circuitry activates only during alarms, extending battery life and reducing maintenance.
- • **Peace of Mind, No WiFi Needed:** Simple setup with a 9V alkaline battery means reliable, wireless protection without complicated tech.
- • **Piercing Alert for Instant Action:** 110 dB alarm ensures you hear it loud and clear anywhere in your home—no more silent disasters.

## Overview

The Basement Watchdog 360° Water Alarm is a compact, patented water detection device that senses as little as ¹⁄₃₂" of water from any angle. Featuring a powerful 110 dB alarm and energy-efficient solid-state circuitry, it provides early leak alerts to prevent costly water damage. Easy to install and battery-operated, it fits seamlessly in various home locations, delivering reliable, wireless protection with a 5-year limited warranty.

## Description

The Basement Watchdog Compact 110 dB Water Alarm w/360° Sensing Technology (BW-WA360) - desertcart.com

Review: Gives us peace of mind - We bought one of these on a whim and ended up returning to buy more. When we purchased our current home in the fall of 2023 it needed quite a bit of TLC and updating, including a basement clean-up from recurring water issues. One day, while doing laundry, one of our sump pumps failed and 3/4 of our basement had standing water. The plumber found that not only the laundry sump pump had failed, but the other sump pump in the basement recently had as well (it was used for the downspouts and we hadn't had any rain for weeks). After replacing those pumps (one with a battery back-up unit), we knew we needed something else to give us peace of mind. After some research, we found the Basement Watchdog. It was affordable, not super complicated, and easy to "install" (it's small and nicely compact so all you have to do is install the battery and set where you want it and you're all set). We tested it and were impressed by how loud the alarm is. Months later, with no excitement in the basement, we are on the main floor of our house and hear this piercing, consistent alarm noise. We realized it was the Watchdog. Going downstairs, we found the slop sink by the laundry leaking water out of the bottom (the washer drained into the sink). The pipe underneath had cracked when we disconnected it to be able to move the sink and paint the basement walls/floors with DryLok waterproofing and we didn't know until we ran that first wash cycle. There was just a small amount of water accumulated on the floor and the alarm went off. We will install these at all our homes in the future. They are light and compact, efficient, and give us considerable peace of mind. No wifi required either. I'm unsure if there are other units that do offer that additional connectivity, but we're happy at minimum to have that layer of protection.
Review: Good and reliable - Easy battery installation and unit is very loud. This is a very good alarm and a good price.

## Features

- Patented design allows it to detect water on any side
- Senses as little as ¹⁄₃₂" of water
- Compact size (2⅜" x 1" x 3 ¼") fits almost anywhere
- Piercing 110 dB alarm can be heard throughout the house
- Save money by detecting leaks early, before costly water damage occurs
- Solid-state circuitry is extremely sensitive and reliable
- Battery-saver feature only uses energy when the alarm is sounding
- Requires a 9-volt alkaline battery (not included)
- Place in a variety of locations: Next to a sump pit, near water heater, by refrigerator, adjacent to dishwasher, beside washing machine, under sink or close to air conditioner drip pan

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BJW3XJRS |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Description | Alkaline |
| Best Sellers Rank | #10,102 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #18 in Water Detectors & Alarms |
| Control Method | Remote |
| Customer Reviews | 4.6 4.6 out of 5 stars (277) |
| Date First Available | October 20, 2022 |
| Description Pile | Alkaline |
| Included Components | THE BASEMENT WATCHDOG Model BW-WA360 110 dB Battery Operated Water Alarm |
| Item Package Quantity | 1 |
| Item Weight | 3.91 ounces |
| Item model number | BW-WA360 |
| Manufacturer | Glentronics |
| Material | Plastic |
| Mounting Type | Wall Mount, Pit Mount, Floor Mount, None |
| Noise Level | 110 Decibels |
| Part Number | BW-WA360 |
| Product Dimensions | 2.38 x 1 x 3.25 inches |
| Sensor Technology | Contact Sensor |
| Size | One Size |
| UPC | 717301124259 |
| Voltage | 9 Volts |
| Warranty Description | 5 Year Limited Warranty |

## Product Details

- **Brand:** THE BASEMENT WATCHDOG
- **Color:** Gray
- **Compatible Devices:** Various water-prone devices and areas
- **Power Source:** Battery Powered
- **Product Dimensions:** 2.38"L x 1"W x 3.25"H

## Images

![Compact 110 dB Water Alarm w/360° Sensing Technology (BW-WA360) - Image 1](https://m.media-amazon.com/images/I/71C2gBnAr0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Gives us peace of mind
*by A***E on January 11, 2026*

We bought one of these on a whim and ended up returning to buy more. When we purchased our current home in the fall of 2023 it needed quite a bit of TLC and updating, including a basement clean-up from recurring water issues. One day, while doing laundry, one of our sump pumps failed and 3/4 of our basement had standing water. The plumber found that not only the laundry sump pump had failed, but the other sump pump in the basement recently had as well (it was used for the downspouts and we hadn't had any rain for weeks). After replacing those pumps (one with a battery back-up unit), we knew we needed something else to give us peace of mind. After some research, we found the Basement Watchdog. It was affordable, not super complicated, and easy to "install" (it's small and nicely compact so all you have to do is install the battery and set where you want it and you're all set). We tested it and were impressed by how loud the alarm is. Months later, with no excitement in the basement, we are on the main floor of our house and hear this piercing, consistent alarm noise. We realized it was the Watchdog. Going downstairs, we found the slop sink by the laundry leaking water out of the bottom (the washer drained into the sink). The pipe underneath had cracked when we disconnected it to be able to move the sink and paint the basement walls/floors with DryLok waterproofing and we didn't know until we ran that first wash cycle. There was just a small amount of water accumulated on the floor and the alarm went off. We will install these at all our homes in the future. They are light and compact, efficient, and give us considerable peace of mind. No wifi required either. I'm unsure if there are other units that do offer that additional connectivity, but we're happy at minimum to have that layer of protection.

### ⭐⭐⭐⭐⭐ Good and reliable
*by S***0 on July 14, 2025*

Easy battery installation and unit is very loud. This is a very good alarm and a good price.

### ⭐⭐⭐⭐⭐ Water Leak Alarm: Water heater/water lines
*by S***! on August 1, 2025*

Made purchase for water heater and under my stairs where water lines are to alert when there is water. Seems to work as intended. Alarm is loud enough to get your attention. Very easy to use! Will trigger with minimal amount of water.

## Frequently Bought Together

- THE BASEMENT WATCHDOG Model BW-WA360 110 dB Battery Operated Water Alarm
- THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm
- Amazon Basics 8-Pack 9V Alkaline Batteries, 5-Year Shelf Life - for Smoke/CO Detector, Electronics & Audio

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**Shop now:** [https://www.desertcart.hk/products/492437238-compact-110-db-water-alarm-w-360-sensing-technology-bw](https://www.desertcart.hk/products/492437238-compact-110-db-water-alarm-w-360-sensing-technology-bw)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-24*