---
product_id: 348872321
title: "Honeywell RWD42/a Defense Water Leak Alarm with Sensing Cable"
brand: "honeywell home"
price: "$129.09"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/348872321-honeywell-rwd42-a-defense-water-leak-alarm-with-sensing-cable
store_origin: US
region: United States of America
---

# 250 ft max sensing range 100 dB loud alert 5 ft expandable sensing cable Honeywell RWD42/a Defense Water Leak Alarm with Sensing Cable

**Brand:** honeywell home
**Price:** $129.09
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay ahead — the ultimate water leak watchdog!

## Quick Answers

- **What is this?** Honeywell RWD42/a Defense Water Leak Alarm with Sensing Cable by honeywell home
- **How much does it cost?** $129.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/348872321-honeywell-rwd42-a-defense-water-leak-alarm-with-sensing-cable)

## Best For

- honeywell home enthusiasts

## Why This Product

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

## Key Features

- • **Instant Loud Alerts:** 100 dB alarm ensures you never miss a leak warning, protecting your home and wallet.
- • **Reusable & Reliable:** Resettable after each alert—just dry and reuse, making it a sustainable choice for ongoing protection.
- • **Smart Battery Reminder:** Low battery chirp keeps you ahead of maintenance, so your defense is always active.
- • **Comprehensive Leak Coverage:** Surround appliances and vulnerable spots with up to 250 ft of sensing cable for unmatched water detection.
- • **Effortless Setup & Flexibility:** Simple plug-and-play design with floor or wall mount options fits seamlessly into your space.

## Overview

The Honeywell RWD42/A Defense Water Leak Alarm features a 100 dB audible alert and a 5 ft sensing cable expandable up to 250 ft, enabling broad coverage around high-risk water areas. Easy to install on floors or walls, it offers reusable leak detection with a low battery reminder, making it an essential, reliable safeguard against costly water damage.

## Description

Honeywell RWD42/a Defense Water Leak Alarm with Sensing Cable

## 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 |
|---------------|-------|
| Noise Level | 100 dB |
| Mounting Type | Wall Mount |
| Maximum Range | 250 Feet |
| Sensor Technology | Contact Sensor |
| UPC | 085267884761 |
| Global Trade Identification Number | 00085267884761 |
| Manufacturer | Honeywell Home |
| Item model number | RWD42/A |
| Product Dimensions | 9.14 x 9.14 x 3.18 cm; 45.36 g |
| ASIN | B0758PZ4J8 |

## Product Details

- **Colour:** White
- **Brand:** Honeywell Home
- **Power Source:** Battery Powered
- **Battery Description:** Alkaline or Lithium
- **Voltage:** 1.5 Volts (DC)

## Images

![Honeywell RWD42/a Defense Water Leak Alarm with Sensing Cable - Image 1](https://m.media-amazon.com/images/I/61nSj75FqTL.jpg)

## Frequently Bought Together

- Honeywell Home RWD42/A Water Defense Water Leak Alarm with Sensing Cable, Rwd42 , White
- Resideo RWD21 Reusable Water Leak Alarm
- THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-08*