AquaChek 541604A Select Kit Test Strip for Swimming Pools Size:2-Pack the poolguard poolside alarm works

the poolguard poolside alarm works on a 9-volt battery (not included)

The Koolgrips "Kool Comfort Cover" provides a slip-resistant grip for your railings

Lens and frame vented to increase air flow

making winterization fast and simple

easy to read comparator

AquaChek 541604A Select Kit Test Strip for Swimming Pools Size:2-Pack the poolguard poolside alarm worksAquaChek 541604 02 Select 7 in 1 Test Strips Kit (2 Pack) 2 Pack Includes Two Kits, Each Including 50 Strips Each Kit Contains: 50 Test Strips, Color Chart & Comparator, And Booklet Entitled The Complete Guide To Pool & Spa Care Tests For 7 Important Chemistries In Seconds: Total Hardness, Total Chlorine, Total Bromine, Free Chlorine, Ph, Total Alkalinity, And Cyanuric Acid. No Assembly Required