D&D Pool Gate Magna Latch (Top Pull) With AlertMagnaLatch ALERT models set entirely new levels for safety gates around swimming pools, childcare centres, schools, homes or wherever child safety is critical. The MagnaLatch ALERT offers dual electronic warnings: bright, flashing LED lights and an audible alarm that sounds if a gate is opened or left unlatched. So you can see at a glance and hear from a distance, if your gate is not secured. Visual unlatched alarm. Audible unlatched alarm.