Poolguard Above Ground Safety Buoy Pool Alarm is designed to be used in any above ground pool including quick-set, soft-sided and portable above ground pools, as well as spas. The Safety Buoy alarm is the only floating alarm NSF certified to the ASTM F2208 pool alarm standard. The Safety Buoy floats on the water and uses sub-surface detection technology and includes an in-house remote receiver with a 200 ft. range.