Techko S096 Indoor Vibration Sensor Alarm, Solar Powered, Ultra Slim Design

This device is simply awesome.Some of the great features about it include: It has solar panels on it so no need to plug it in anywhere. It is really ultra slim and allows my vinyl double sliding windows to open and close just fine with the device attached to the window pane. In regards to its sensitivity (Which is the number 1 feature) it is not so sensitive that opening glass windows or doors will trigger it. It is sensitive enough that if you give it a good thump on your glass surface that it will go off. If you have small children do not let the thump your glass sliding door or you will both be blasted with a 30 second + loud noise. One nice feature is that it has an on/off switch so in the event of a false alarm ( some 5 yr old thumping the glass cause he is bored or some stupid bird hitting your glass door) you can run up to the device and hit it off. Then simply turn it back on and its good to go. May I suggest that you wear hearing protection as this device is actually quite loud. If you have a sliding glass door or non-single pane windows get as many as you have panes. So for example I have two paned windows so I have put two devices on just in case the robber is skinny and wants to break through either one.Another plus is that each unit comes with two stickers that warn potential criminals that this house is under electronic surveillance. One for the window ( you put on the inside of your window) and one for a door.As for the warranty it is 3 years which is a plus. I have only had them for a few days now so I don't know how defective or not they are. So far so good, 7 out of 7 purchased worked out the box just perfectly. Again I stress ear protection.In precis, I highly recommend this product to anyone who wants a maintenance free window security device. I also suggest getting some device to detect when the windows are being forced open...as not all criminals want to smash your windows....especially after seeing this device.

the alarm does not always work when triggered. I have it in a window with FULL sun and yet when the window is opened the alarms only goes off sometimes. I tried hitting the window with my fist to make it go off and even that doesn't do it. I had to buy another product since this one was no good.

NOT LOUD AT ALL

"For use on window or glass doors facing the sun."That's what the description says.Should we assume they rather mean to say, facing "sunlight?"(and not facing a dark wall of your neighbor, for instance.)Most of these rechargeables do not have to be facing directsun light, as far as I know. Then why don't they be more clear?How many applications do you suppose can this be used inif they really mean: facing direct sun light?Who knows what they mean.You'd think these companies (and Amazon) would care a bit moreabout the clarity of their descriptions: after all, isn't therethousands, and thousands of dollars to be made on Amazon sales?

I had the previous version, but the battery size is awkward and seems to run out fast - this one recharges. We keep it on a window that luckily receives a consistent and generous amount of natural light. The dimensions of the window makes it difficult to have any other type of alarm system on it. It actually woke me up from a couple rooms away today (no doors closed in between them) because it is so sensitive, but better to be safe than sorry - definitely helps to keep our family's mind at ease.