Door Window Alarm 100 dB Simi DA150The Door Window alarm uses a magnetic sensor to detect the opening of a protected door or window. A 100 dB alarm will then alert you to an attempted entry and scare off potential intruders. The owner may open the window or other protected object, without setting off the alarm by switching the on/off switch to the off position. This alarm may also be used within the home to alert parents to children opening a gun or medicine cabinet or used to protect exterior doors(from the inside), particularly those hard to protect sliding glass doors. Commercial uses include showcases and cash registers.Comes with batteries installed and 2 sided sticky tape for mounting anywhere you need it. Batteries included. Extra batteries (uses 3 button cell batteries)are available on the dropdown menu at a discount. For indoor use only. (Note: other websites sell a very similar product for up to $9.95 each) Buy 10 for $2.49 each and get 10 free extra batteries(one card) Door/Window Mini Alarm - MMCAFrom the American Tinnitus Association website: We measure the loudness of sound in decibels (dB). Most experts recommend that you use earplugs when exposed to 85 dB and above. But what does 85 dB mean? The following chart shows common sounds and their associated sound levels.70 dB Washing Machine 80 dB Alarm Clock 2 feet away 100 dB Blow Dryer, Subway Train 105 dB Chainsaw, Power Mower 110 dB Screaming Child 120 dB Rock Concert 130 dB Jackhhammer, Jet Plane |
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| LR44 AG13 Button Batteries Card of 10 Batteries | |
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