Comparison numbers

33 Products researched
9 Research hours
630 Readers
29,681 Customer ratings

Best Water Alarms

Water Detector Comparison 2026

water alarm
water alarm
 interconnected smoke detector
interconnected smoke detector
 carbon monoxide detector
carbon monoxide detector
 smoke alarm
smoke alarm
 carbon dioxide detector
carbon dioxide detector
 gas detector
gas detector
 smart smoke detector
smart smoke detector
 fire extinguisher
fire extinguisher
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Best Product
HomeMatic 151694A0
HomeMatic 151694A0
Amazon
ABUS HSWM10000
ABUS HSWM10000
Amazon
Bestseller
DETENO water alarm
DETENO water alarm
Amazon
Honeywell RWD21
Honeywell RWD21
Amazon
Best Price
Smartwares FWA-1821
Smartwares FWA-1821
Amazon
Schabus 300240
Schabus 300240
Amazon
X-Sense water alarm
X-Sense water alarm
Amazon
RatingHow we compare
Customer rating (from Amazon)
Available at
Manufacturer
Dimensions
Alarm
Areas of application
Power supply
IP protection class
App
Advantages
Shipping (Amazon)
Best Product
Best Product
AmazonHomeMatic 151694A0
Rating
Excellent01/2025

1

HomeMatic 151694A0
Customer rating
Amazon1,435 reviews
Check Price
Available at
74,60 £
see vendordays
see vendordays
Manufacturer
HomeMatic
Dimensions
1,2 x 3,1 x 3,1 in
Alarm
Areas of application
  • - Cellar
  • - Bath
Power supply
Battery, AAA battery, Power adapter
IP protection class
IP15, IP44, IP20, IP14
App
Advantages
  • App control
Shipping (Amazon)
see vendor
Check Price
AmazonABUS HSWM10000
Rating
Excellent05/2025

2

ABUS HSWM10000
Customer rating
Amazon1,963 reviews
Check Price
Available at
31,99 £
see vendordays
24,41 £
see vendordays3.53.5£
24,00 £
3 daysdays3.993.99£
Manufacturer
ABUS
Dimensions
1,4 x 2,4 x 4 in
Alarm
Areas of application
  • - Bath
  • - Kitchen
  • - Cellar
Power supply
A battery
IP protection class
App
Advantages
  • App control
  • Alarm function
Shipping (Amazon)
3 days
Check Price
Bestseller
Bestseller
AmazonDETENO water alarm
Rating
Excellent05/2025

3

DETENO water alarm
Customer rating
Amazon4,401 reviews
Check Price
Available at
79,99 £
see vendordays
see vendordays
Manufacturer
Dimensions
2 x 4 x 8 in
Alarm
Areas of application
    Power supply
    Wired, Battery/rechargable Battery
    IP protection class
    App
    Advantages
    Shipping (Amazon)
    see vendor
    Check Price
    AmazonHoneywell RWD21
    Rating
    Excellent01/2025

    4

    Honeywell RWD21
    Customer rating
    Amazon2,381 reviews
    Check Price
    Available at
    19,60 £
    see vendordays
    see vendordays
    Manufacturer
    Honeywell
    Dimensions
    1,4 x 5,5 x 7,2 in
    Alarm
    Areas of application
      Power supply
      IP protection class
      App
      Advantages
      • Has an alarm
      Shipping (Amazon)
      see vendor
      Check Price
      Best Price
      Best Price
      AmazonSmartwares FWA-1821
      Rating
      Excellent01/2025

      5

      Smartwares FWA-1821
      Customer rating
      Amazon263 reviews
      Check Price
      Available at
      7,98 £
      see vendordays
      14,19 £
      see vendordays00£
      Manufacturer
      Smartwares
      Dimensions
      9,1 x 24,8 x 24,8 in
      Alarm
      Areas of application
      • - Cellar
      • - Bath
      • - Kitchen
      • - Boat
      Power supply
      Battery
      IP protection class
      IP65
      App
      Advantages
      • Alarm function
      Shipping (Amazon)
      see vendor
      Check Price
      AmazonSchabus 300240
      Rating
      Excellent01/2025

      6

      Schabus 300240
      Customer rating
      Amazon190 reviews
      Check Price
      Available at
      75,96 £
      see vendordays
      see vendordays
      Manufacturer
      Schabus
      Dimensions
      1,7 x 2,4 x 4,6 in
      Alarm
      Areas of application
      • - Cellar
      • - Kitchen
      Power supply
      Power adapter
      IP protection class
      IP20
      App
      Advantages
      Shipping (Amazon)
      see vendor
      Check Price
      AmazonX-Sense water alarm
      Rating
      Very Good02/2026

      7

      X-Sense water alarm
      Customer rating
      Amazon1,291 reviews
      Check Price
      Available at
      41,98 £
      see vendordays
      70,59 £
      see vendordays00£
      Manufacturer
      X-Sense
      Dimensions
      1,1 x 3 x 3 in
      Alarm
      Areas of application
      • - Bath
      • - Cellar
      • - Kitchen
      Power supply
      Battery
      IP protection class
      IP66
      App
      Advantages
      • With app
      • Has an alarm
      Shipping (Amazon)
      see vendor
      Check Price

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