14" x 20" Stamped Face Filter Grille, 4" Housing, White - Shoemaker FG4-14X20

Hello! Thanks for posting a query about the Honeywell RWD21/A water leak alarm. You'll need a 9-Volt Alkaline-type battery for this alarm. We also have the Duracell Coppertop MN1604B1Z 9-Volt battery available on our site. Just click on the link to order it along with the water leak alarm. To purchase, just hit "Add To Cart, then enter your shipping details, and we'll do the rest. Thanks for visiting PlumbersStock! Have a fabulous day!

Hi! Thank you for posting your query about the Honeywell RWD21/A leak alarm. This alarm is powered by a 9-volt battery, lasting up to 2 years under typical conditions. To purchase this reusable water sensor, simply click “Add to Cart,” fill out the required fields, and we’ll take care of the rest. Thank you for visiting PlumbersStock! Have a great day!