The Poolwatch Pool Alarm System gives safety and peace of mind for both above ground and in-ground pool owners alike. This unbeatable alarm complies with ASTM F2208 standards and can easily be installed onto pool decking or top rails for the maximum safety feature of any pool. The Poolwatch utilizes intelligent internal software with high tech sensors that will detect entrance into the pool and emit a loud audible sound. The receiver can be placed up to 100-ft (30 m) away. The system prevents false alarms due to wind, rain, floating objects in the pool or automatic cleaners giving you sure safety and confidence all season long. Quick, easy installation onto deck or pool rail. 1 year limited warranty. NSF certified to ASTM F2208 requirements for pool alarms Electronic sensor detects entry into pool by children, pets, or intruders Remote receiver sounds when the pool alarm is activated - 100 ft wireless range Alarm is designed to detect objects weighing 18-lbs or more 110 volt AC or 9 volt battery powered receiver (battery not incuded) 6-D batteries required for pool sensor (batteries not included) Gender: unisex.