Comparison numbers

31 Products researched
9 Research hours
630 Readers
27,111 Customer ratings

Best Water Alarms

Water Detector Comparison 2025

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
Sort & Filter
Best Product
HomeMatic 151694A0
HomeMatic 151694A0
Amazon
Bestseller
DETENO water detector
DETENO water detector
Amazon
Honeywell RWD21
Honeywell RWD21
Amazon
sebson GS153
sebson GS153
Amazon
Best Price
Smartwares FWA-1821
Smartwares FWA-1821
Amazon
Schabus 300240
Schabus 300240
Amazon
Honeywell W1KS
Honeywell W1KS
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
Amazon1,407 reviews
Check Price
Available at
70,10 £
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
Bestseller
Bestseller
AmazonDETENO water detector
Rating
Excellent05/2025

2

DETENO water detector
Customer rating
Amazon4,076 reviews
Check Price
Available at
66,28 £
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

    3

    Honeywell RWD21
    Customer rating
    Amazon2,356 reviews
    Check Price
    Available at
    25,12 £
    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
      Amazonsebson GS153
      Rating
      Excellent01/2025

      4

      sebson GS153
      Customer rating
      Amazon1,804 reviews
      Check Price
      Available at
      15,99 £
      see vendordays00£
      Manufacturer
      sebson
      Dimensions
      0,9 x 2,4 x 2,4 in
      Alarm
      Areas of application
      • - Bath
      • - Kitchen
      • - Cellar
      Power supply
      Battery
      IP protection class
      IP65
      App
      Advantages
      Shipping (Amazon)
      see vendor
      Check Price
      Best Price
      Best Price
      AmazonSmartwares FWA-1821
      Rating
      Excellent01/2025

      5

      Smartwares FWA-1821
      Customer rating
      Amazon237 reviews
      Check Price
      Available at
      7,98 £
      see vendordays00£
      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
      Amazon187 reviews
      Check Price
      Available at
      75,89 £
      see vendordays00£
      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
      AmazonHoneywell W1KS
      Rating
      Very Good01/2025

      7

      Honeywell W1KS
      Customer rating
      Amazon490 reviews
      Check Price
      Available at
      31,25 £
      see vendordays00£
      see vendordays
      Manufacturer
      Honeywell
      Dimensions
      12,6 x 30,7 x 30,7 in
      Alarm
      Areas of application
      • - Bath
      • - Cellar
      Power supply
      AA battery
      IP protection class
      App
      Advantages
      • App control
      Shipping (Amazon)
      see vendor
      Check Price

      Similar categories

      Measuring equipment
      Measuring equipment
      Multimeter
      Open comparison
      Measuring equipment
      Measuring equipment
      Oscilloscope
      Open comparison
      Measuring equipment
      Measuring equipment
      Surveyor's level
      Open comparison
      Measuring equipment
      Measuring equipment
      Angle measure
      Open comparison
      Measuring equipment
      Measuring equipment
      Laser line level
      Open comparison
      Website only uses essential cookies: these cookies are required for the operation of the website. Users cannot deactivate essential cookies (except in browser). For further information, refer to privacy policy.