Yeah, you can use the Blue Wave NA4212 Poolwatch Pool Alarm for above-ground pools. The manufacturer describes it as being able to spot disturbances in the water, like when something weighing at least 18 pounds enters the pool.

So, it's a useful way to keep an eye out for kids or pets around the pool. The alarm will sound both at the pool and inside your house, which adds a bit more peace of mind.

From what we've found, people have mixed opinions on its sensitivity and reliability. Some folks are happy with how loud it is—mentions of it being loud enough to alert not just people inside, but also the neighbors. That's comforting for families who are keen on pool safety.

However, a few have pointed out some snags, like the alarm sometimes not going off as quickly as they'd like or not being loud enough, especially if someone larger enters or if there's some distance involved during testing.

Overall, it's seen as a decent budget option, balancing cost and effectiveness. You'll need to drill into your pool deck to set it up, which some have mentioned.

But, it does react quickly to water movements and has a 'swim' mode to avoid false alarms during pool use. Just remember to test it thoroughly once it's set up and be ready for a bit of troubleshooting to make sure it works best for your pool situation.

Setting up the Blue Wave NA4212 Poolwatch Pool Alarm isn't too complicated, but make sure to follow a few tips so it works well without giving you false alarms. You can use it for both above-ground and in-ground pools, which is pretty handy, just as the manufacturer's description says.

First off, the instruction manual included with the alarm is your go-to guide. It lays out everything step-by-step. Just a heads up—if you've got concrete around your pool, you might need to drill a bit, according to our research. A few folks mentioned this could be a downside if you don't want to make permanent changes.

The alarm is designed to alert you to objects weighing 18 pounds or more entering the pool. Its purpose is to help prevent accidents by notifying you of any unexpected pool activity.

Our research highlights the importance of placing the poolside unit in the right spot to cut down on false alarms. Some reports have mentioned delayed alerts or missed detections, especially with lighter people. One thing to note: you can't adjust the sensitivity settings, so sometimes wind or a busy filtration system might set off the alarm.

For power, the main alarm unit takes six D-cell batteries which aren't included, or you can use a 110V AC adapter with a 9V battery backup for the remote part. The manufacturer also suggests keeping the pool water level just right to avoid false alarms.

Remember, getting the best out of the Blue Wave alarm comes down to carefully following the installation instructions and regular check-ups.

If you take the time to set it up properly, it usually does a good job of alerting you, adding an extra layer of safety to your pool area.

When you're looking at the Blue Wave NA4212 Poolwatch Pool Alarm, it's good to know it really delivers on loudness, which is key for a reliable pool safety device. The manufacturer mentions that this alarm blasts a loud warning sound, and it can be heard both poolside and indoors up to 100 feet away. That's pretty essential for knowing the moment someone—whether it's a child, a pet, or an unexpected guest—enters the pool.

One thing to keep in mind is that installing this alarm involves drilling into your pool deck, making a permanent change. Some folks, especially those with concrete poolscapes, might find this a bit daunting. Our research suggests it's something you'll want to seriously consider before taking the plunge.

Once it's in place, though, people generally find it works well. The alarm is set to react to movements from anything over 18 pounds, which is pretty reassuring if you're worried about safety.

Though the installation can be a bit of a task, many have found it manageable with the provided instructions. If you're not thrilled about drilling, you might want to look into alternative mounting options or get advice from a pool pro to find a less invasive way to set it up.

All in all, if you can get past the installation part, this alarm does its job with a loud, clear alert and a decent range. It's worth thinking about how these features fit with your needs and pool setup before deciding.