ERAY Door Alarm Wireless, D3 DIY Home Kids Child Elder
https://mirienvpct.doodlekit.com/blog/entry/5142591/alarms-on-doors-that-have-access-to-a-pool
With a pool has the benefit to be a true relief from heat in summer time and the disadvantage of hosting a possible tragedy for the pets or children. Pools can pull a kid's curiosity.