Wireless Alarm for Door and Window Review

This wireless alarm (sku.826) consists of two small pieces, one containing 3 (three) LR44 batteries (or AG13) and a ON/OFF switch and the other containing only a magnetic bar. When these pieces get separate, for example when a door is opened, the alarm goes off a loud sound and treble (90dB to 105dB), which ends scaring any undesirable person.

It is not necessary to use wires, the alarm is small and both pieces that compound the alarm have a double-side adhesive tape backside to simplify the attachment.

Ease of Use

This wireless alarm is recommended to be used on doors and windows of your house, but you also can use it to secure compartments, for instance.

To install the home alarm, you just need to stick (use the double-side adhesive tape) the main piece (that one with the batteries) on the edge of your door (or window), stick the other piece on the door frame and turn on the alarm, but make sure that the two pieces are aligned (there is a reference line on the main piece).

The maximum distance between the two pieces without the alarm going off is 10 mm (approximately).

Price

Considering its usefulness, this wireless entry alarm has a good cost/benefit relation with its price for about $1.8 at Dealextreme (also sold at Tinydeal).

If you are looking for a cheap home alarm, then probably this one will be a great candidate.

Build Quality

Regarding the build quality, the wireless alarm has a loud sound and the double-side adhesive tape is OK. The only problem was that we bought 3 (three) alarms, but 1 (one) of them did not work.

Usefulness

Although simple, this wireless alarm is very useful for those who want to spend a bit and have a simple solution to protect their homes. If you prefer, you can also use it, for instance, to avoid children from opening doors of compartments containing hazardous materials.

As discussed in the Dealextreme's forum, perhaps the loud sound can makes some animals feel stressed. Unfortunately, we could not confirm that, so it is up to you to be careful when the wireless alarm goes off.

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Neodymium Magnetic Balls 5mm Review - Black

This curious item sold at Dealextreme (and others similar websites) is a pack containing 216 magnetic balls (a.k.a. buckyballs, neocubes and zen magnets) and a steel case. More specifically, these balls (or spheres) are neodymium magnets, the most widely-used type of rare-earth magnets (neodymium magnets are also know as NdFeB, Neo or NIB magnets).

Each sphere of this particular item (sku.30801) has 5mm of diameter and is black, but there is others sizes and colors as you will see below.

Style

We have acquired only the item with 216 black magnetic balls of 5mm, but there are others items with different colors, quantity of balls and diameters. For example, if you did not liked the black color, then you can buy the gold color or the silver color version of this same item. Or then, if you think there is too much spheres in the package, then you can buy a pack containing 100 balls, 20 balls or only 10 balls.

Price

This item is sold for about $26 (twenty-six) which, compared with others websites similar to Dealextreme, is a little expensive for a toy. For instance, Focalprice also has an item with 216 black neodymium magnetic balls of 5mm for about $15 (fifteen), which saves $11, but we cannot confirm if these two items have the same magnetic power.

Usefulness

These neodymium magnets are only a toy, but they are very strong magnets and very addictive. You can play for hours building shapes, patterns, sculptures and what else your imagination can think.

As they are very strong magnets, at first, these balls seem a little difficult to handle, but after a few hours playing with them you end up figuring out a way of handling them (a card is very useful).

Be careful, because these spheres can be eaten by children or pets.

If you got curious about these neodymium magnets, then watch the video below.

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