This alarm works effectively on either windows or doors. Easy to install and adds the additional home security feature to cover areas you may not already have alarmed. I don't have anything negative to say about the product. It was recommended to me by a family member who also purchased this product.
Verified purchase: Yes | Condition: New
All batteries almost dead. When I used the inside battery tester, it failed to light. I tested 2 of the 4 units. The sound was so faint, I could barely hear it. I was considering just keeping the units and replacing the batteries, until I found out that each battery costs approximately $1.50 and each unit takes 4 or 5 batteries. These were purchased as brand new units which were supposed to come with fully charged working batteries.. I will be returning this. Very disappointed with the product - not sure if batteries were defective or old - if if there was a problem with the units.
Verified purchase: Yes | Condition: New
It can be set for Alarm, Chime or Off. It may not prevent break in but can make loud alarm sound to potentially scare away thieves. Comes with button batteries which are quite durable. Two sided adhesive tapes are provided for installation.
Verified purchase: Yes | Condition: New
Protects doors , windows at home while sleepng. Easy to operate. eassy to set up. I have one I have use for years.
Verified purchase: Yes | Condition: Pre-owned
Although I hate those little button batteries and thought these alarms came with more reliable batteries, it does have a battery checker which is a convenience that most other alarms do not have
Verified purchase: Yes | Condition: New
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