---
product_id: 46864599
title: "Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White"
brand: "honeywell"
price: "¥11260"
currency: JPY
in_stock: true
category: "Honeywell"
url: https://www.desertcart.jp/products/46864599-honeywell-home-rwd42-a-water-defense-water-leak-alarm-sensing
store_origin: JP
region: Japan
---

# 5 ft sensing cable included 100 dB loud audible alert Low battery chirp reminder Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White

**Brand:** honeywell
**Price:** ¥11260
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay worry-free — your silent water watchdog!

## Quick Answers

- **What is this?** Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White by honeywell
- **How much does it cost?** ¥11260 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/46864599-honeywell-home-rwd42-a-water-defense-water-leak-alarm-sensing)

## Best For

- honeywell enthusiasts

## Why This Product

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

## Key Features

- • **Flexible Placement:** Floor or wall mount with included double-sided tape for versatile setup
- • **Instant Loud Alerts:** 100 dB alarm ensures you never miss a water threat
- • **Low Battery Warning:** Chirp alert keeps you ahead of power issues to avoid downtime
- • **Reusable & Resettable:** Simply dry and reset after leaks for continuous protection
- • **Expanded Leak Coverage:** 5 ft sensing cable detects leaks around appliances & large areas

## Overview

The Honeywell Home RWD42/A Water Defense Alarm features a 5-foot sensing cable for expanded leak detection, a piercing 100 dB audible alert, and a low battery reminder chirp. Designed for flexible floor or wall mounting, this reusable, battery-powered device is ideal for safeguarding high-risk areas like basements, laundry rooms, and kitchens from costly water damage.

## Description

In a home, the threat of a water leak is always lurking. Whether it’s just a small drip or full-on overflow, a leak costs you money — in waste or in damage. The Water Leak Sensing Alarm can be your front line in water defense. Place it near high-risk areas for leaks: bathrooms, laundry room, basements and faucets and be alerted with a loud audible alarm as soon as water is detected.

## Features

- EXPANDED DETECTION: Detect water with sensors on the unit or expand coverage with the included 5 ft. water sensing cable. The additional length makes this alarm ideal for surrounding appliances or use in larger areas such as utility rooms.
- AUDIBLE ALERTS: When any portion of the sensor or cable detects water, an audible alert of 100 decibles will sound to alert you to the potential leak.
- EXTENDED AREA: The entire cable senses water allowing you to surround water heaters and sump pits, run under sinks, behind refrigerators and under dishwashers. Expand coverage by purchasing additional cables to cover an even larger area - up to 250 ft.
- SIMPLE USE: Easy to use - once batteries are installed, insert the sensing cable into the cable sensor jack on the bottom of the detector, place detector so the cable is positioned where leaks are most likely to occur.
- REUSABLE: Resettable for re-use once alarm sounds. Simply dry off leak detector, clean up water and replace.
- LOW BATTERY REMINDER: The water leak alarm provides a chirp alert to remind you it's time to change the 2 AA batteries (not included).
- FLOOR OR WALL MOUNT: The detector can be placed flat on the floor or mounted on a surface. For wall mounting, use double-sided tape (included) to adhere to a dry surface. For indoor use only.
- This water leak detector is a non-WiFi unit and will notify you of leaks via an audible alarm.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0758PZ4J8 |
| Audible Noise | 100 db |
| Battery Description | Alkaline or Lithium |
| Best Sellers Rank | #140,833 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #101 in Water Detectors & Alarms |
| Brand | Honeywell |
| Built-In Media | 5-Foot Water Sensing Cable, Double Sided Tape, Installation Instructions, Water Leak Alarm |
| Color | White |
| Control Method | App |
| Customer Reviews | 3.7 out of 5 stars 151 Reviews |
| Global Trade Identification Number | 00085267884761 |
| Item Dimensions L x W x H | 3.6"L x 3.6"W x 1.25"H |
| Item Type Name | Resideo Water Leak Alarm with Sensing Cable, RWD42 |
| Item Weight | 1.6 ounces |
| Manufacturer | Honeywell Home |
| Maximum Range | 200 feet |
| Mfr Part Number | RWD42/A |
| Model Number | RWD42/A |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AA batteries required. |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Battery Powered |
| Product Dimensions | 3.6"L x 3.6"W x 1.25"H |
| Sensor Technology | Contact Sensor |
| Shape | Square |
| Size | Pack of 1 |
| UPC | 085267884761 |
| Unit Count | 1 Count |

## Product Details

- **Battery Description:** Alkaline or Lithium
- **Brand:** Honeywell Home
- **Color:** White
- **Power Source:** Battery Powered
- **Product Dimensions:** 3.6"L x 3.6"W x 1.25"H

## Images

![Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White - Image 1](https://m.media-amazon.com/images/I/61nSj75FqTL.jpg)
![Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White - Image 2](https://m.media-amazon.com/images/I/71h8La61AzL.jpg)
![Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White - Image 3](https://m.media-amazon.com/images/I/41eOOfa1GQL.jpg)
![Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White - Image 4](https://m.media-amazon.com/images/I/51+uyWCX8OL.jpg)

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-22*