Battery powered WATER ALARM for home....and RV
#1
Battery powered WATER ALARM for home....and RV
Installed some after a dishwasher leak got under our laminate floor. 
Bought 12...9 for inside house and 3 for RV. 9V and 85dB alarm.
First Alert WA 100. 3 for $25 from Amazon. Also see at Home Depot.

Bought 12...9 for inside house and 3 for RV. 9V and 85dB alarm.
First Alert WA 100. 3 for $25 from Amazon. Also see at Home Depot.
#3
As far as I know....they don't chirp when the battery is low. The battery should be replaced every year and sooner if the unit had detected water and was sounding.
#4
These water alarms are a God's send. Saved my bacon several times. There are two types. One time use only and multi use. Don't know why one would need or want a one time use only. Honeywell makes one and are available in most stores.
I keep one at the following locations.
Under dishwasher
Sump pump area
Under each sink
Hot water tank
I keep one at the following locations.
Under dishwasher
Sump pump area
Under each sink
Hot water tank
#5
What a great idea when you have particle board
for flooring.
I just ordered 5 of the Zircon alarms. They do chirp on low battery and lay flat on the floor vs standing up. No 6' wire though if you have to put it in a tight spot.
Won't my kids be excited when they get a couple for Christmas.

I just ordered 5 of the Zircon alarms. They do chirp on low battery and lay flat on the floor vs standing up. No 6' wire though if you have to put it in a tight spot.
Won't my kids be excited when they get a couple for Christmas.

#6
I have one underneath each of my water heaters. As a test see if you can set yours off by pressing your fingers against the metal sensing pads. That's enough to set mine off and about once a month I "try" to remember to give them a test.