Resideo rwd42/a Water Leak Alarm with Sensing Cable

Product Description

The RESIDEO rwd42/a is a water leak detection alarm designed to protect residential and light commercial spaces from water damage near plumbing trouble spots. Powered by 2 AA alkaline batteries, the unit ships with a 5-foot sensing cable that detects moisture along its entire length, expanding the detection zone well beyond traditional spot-style detectors. Additional sensing cables sold separately can extend total coverage up to 240 feet. The alarm triggers audibly when water contacts the cable, and a low-battery chirp alerts the user when power is running low. Plumbers and property maintenance professionals install this device as a cost-effective early-warning measure in areas prone to undetected leaks.

The rwd42/a is suited for residential and light commercial applications wherever unattended water accumulation is a concern. Typical deployment locations include water heater closets, sump pump pits, under kitchen and bathroom sinks, behind washing machines, behind dishwashers, around toilet bases, and along basement perimeters. The cable design allows it to trace the perimeter of a room rather than cover only a single point, making it practical for larger risk zones such as full basement floors or mechanical rooms. No specialized tools or wiring are required for installation.

Key Features

• 5-foot sensing cable detects moisture along its entire length, not just at a single contact point
• Expandable coverage up to 240 feet when additional cables are connected in series (sold separately)
• Audible alarm activates on water contact; separate chirp tone signals low battery condition
• Battery-powered operation requires no hardwiring and allows flexible placement
• Can be placed flat on the floor or surface-mounted using included double-sided tape
• Ready to use out of the box with no assembly required beyond battery installation

Compatibility

Designed as a standalone battery-powered water leak alarm compatible with additional RESIDEO sensing cables sold separately for extended detection runs up to 240 feet.

Installation Notes

Installation requires no licensed trade credential and no hardwiring. Power down or isolate any nearby electrical equipment before placing the cable in wet-prone areas. Install 2 AA alkaline batteries before use; do not mix old and new batteries, and do not mix alkaline and rechargeable battery types. For wall or surface mounting, clean and dry the mounting surface before applying the included double-sided tape to ensure secure adhesion.

Technical Specifications

• Power Source: 2 AA Alkaline batteries (not included)
• Sensing Cable Length (included): 5 feet
• Maximum Extended Cable Length: 240 feet
• Product Weight: 0.33 pounds
• Dimensions (W x D x H): 3.6 x 1.25 x 3.6 inches
• Mounting Options: Floor placement or surface mount (double-sided tape included)

Standard Information

• Brand: RESIDEO
• Manufacturer Part Number: rwd42/a