Question 1

do the windows have to be glass?? I think my windows are plastic.

Accepted Answer

Hello,the windows are plastic also can use them. This alarm is installed by double-sided adhesive tape.So,if the double-sided adhesive tape can be pasted tightly,  such as plastic, metal, wood, etc, it can be installed and used.

Question 2

Could this be used on a sliding garage door?

Accepted Answer

Yes, it can be  used on sliding doors. But you may need to adjust the sensitivity lower to avoid false alarms.

Question 3

Would these be a good idea to place on a patio furniture as an anti theft device?

Accepted Answer

Interesting!  That might work.  These alarms are designed to go off when there is significant vibration or movement (like when some strikes a window or glass door - or actually breaks the window or door).  Thus, if the alarm is armed and installed on patio furniture, any significant motion of that furniture MIGHT set-off the alarm.  When you want to use the furniture, turn the alarm off first.  Of course, if the furniture (like a chair that is light enough to lift) was lifted up and carried away without being jostled, the alarm might not be set off.  But I doubt anyone grabbing and running with patio furniture would be that careful.  Most likely they would handle the furniture rough enough to set off the alarm.  Just place the alarm somewhere on the furniture where it is NOT obvious to the thief so they don't turn it off.  These are cheap enough that it's worth a try. Three devices for under $25 bucks.  If they don't work, put the alarms on some windows you want to secure.  Good Luck.

Question 4

How long does the alarm go off for? Does it have multiple settings for duration? Thx.

Accepted Answer

Hello,
Thank you for your questions.
The alarm goes off for 30s.It only has one 30s setting for duration.
Its sensitivity has multiple settings.

ASIN	B07WTQVCQH
Audible Noise	125 db
Battery Description	Alkaline
Best Sellers Rank	#619 in Home Security Systems
Brand	EverNary
Built-In Media	Vibrating Alarm
Color	Black
Compatible Devices	Home Security System
Control Method	App, Touch
Customer Reviews	4.3 4.3 out of 5 stars (273)
Item Dimensions L x W x H	2.8"L x 2.8"W x 0.35"H
Manufacturer	Evernary
Mfr Part Number	VA01-3
Model Number	VA01-3
Mounting Type	Window Mount
Number of Batteries	9 LR44 batteries required. (included)
Number of Items	3
Power Source	Battery Powered
Sensor Technology	Contact Sensor
UPC	713440107115
Voltage	4.5 volts

Window Alarm Glass Break Sensor Alarm

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