I need to buy this, looks like a great product!

You’re making me want to replace all of mine because they all turned yellow, which means they’re old, and one I can’t reach without a 10ft ladder and I’m scared to go that high so they’re not communicating with each other anymore since I can’t replace the battery, even though they are hard wired too 🤦🏻‍♀️ I did buy a stand alone one though, so I’m not completely unprotected but still…I need the courage to get on the ladder 😂