W1 Water Leak Detector

The W1 Water Leak and Freeze Detector is the low-risk way to offer peace of mind


Leaks and frozen pipes can cause serious damage to customers’ homes. But with the W1 Wi-Fi Water Leak and Freeze Detector, they’ll be notified swiftly on their smart device if there’s a problem, so they can act quickly and avoid potential costly repairs. Battery-operated and compact, this reliable solution can be kept close at hand to offer customers low-maintenance peace of mind.


Key customer features


  • Compact size can be easily carried and stored
  • Battery-operated for simple install
  • Low-maintenance and low-risk one-box solution
  • Place in areas susceptible to water damage
  • Comes with three AA batteries, lasting up to three years
  • 1.2m fully sensing cable can wrap round at-risk pipes
  • Quick-start step-by-step in-app guide and clear LED display
  • Customer receives notifications via smartphone or tablet
  • Appears on Lyric app, even if no T6 Thermostat is present
  • Requires Wi-Fi router (802.11b/g - 2.4GHz) with internet access
  • Works with Android smartphone or tablet with Android 5.0 or later with Bluetooth. iPhone, iPad or iPod Touch with iOS 9 or later
  • Additional fully sensing cables (sold separately) can cover area as large as 150m
  • For internal use only


Key features for installers


  • Simple non-invasive installation
  • Opportunity to supply additional fully sensing cables to extend the protected area
  • Long battery life – up to three years without incident
  • Batteries can be changed by home owner
  • Perfect cross-sell opportunity, as the Honeywell Home app supports both the detector and the T6 Thermostat
  • Freeze detection and humidity monitoring provide additional reasons for install


Technical specification



W1 Wi-Fi Water Leak and Freeze Detector Part Number


W1KS 5004100970022

Accessory Cable Sensor (1.2m)


W1AS 5004100970053

Dimensions (W/H/D)



Additional Cable Sensor Accessory



Siren Alarm

100 dBA


Battery Life

Up to 3 years w/o incident


Ingress Protection Rating




2 years



Box contents


The battery-powered one-box solution


Everything you need for set-up is in one box – the customer just connects it to their Wi-Fi and the Honeywell Home app and it’s ready to use. The W1 Wi-Fi Water Leak and Freeze Detector pack contains:


  • 1 x Unit base
  • 1 x 1.2m fully sensing cable
  • 1 x Mounting screw
  • 3 x AA batteries


Additional fully sensing cables are sold separately and can be added to cover areas of up to 150m.


Product Codes


Product Item Code
W1 Water Leak Detector W1KS 5004100970022
W1 Water Leak Detector extension cable W1AS 5004100970053