Review on Instapark Bright Yellow Flashing Battery by Lamar Hopkins

I have to say it was so easy to install. The battery compartment wasn't difficult to open. Once you get a good grip on the side of your nails it should be easy to do. Plus no screws, no screwdriver required :) They worked as soon as I tested them and the red light tells me the batteries are working. Thumbs up! Now maybe this style, with a handy battery door that opens and closes over Wi-Fi on my Apple iPhone, which I'm waiting and hoping for :) I tested it again tonight and forgot I can open the battery door to stop loud siren . I have hearing loss so I need a loud alarm. So far I really like this brand.