Loud little dude ! Suitable for home and travel for the hotel room order. Sensitivity control and on/off switch. Love this! I am a flight attendant and in hotels all the time. I use this and feel safer at night. Giving me a little peace of mind.
These work great. I have used them on my front and back doors with no problems. You indeed will be warned if anyone enters your house. They will blow your ears out so be careful if you have them set on high. (Keep some earplugs handy). I am absolutely in love!
Excellent purchase. These are easy to operate and compact. The alarm sounds loud enough that I can easily hear if on the second floor, even if asleep. It met my expectations perfectly.
Well packed. I bought these so that we could have some assurance that someone trying to come in our doors uninvited would have a "greeting" when they might try to enter . Wow, loud enough to scare off anyone. We plan to use them when out of town as well.