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Magnetic locks, like electric strikes, use electromagnetism to control the locking mechanism. They rely on electric power, whether from a building current or a battery, and as a result they're as dependable as a refrigerator, TV, or bedside alarm clock (though like any other household appliance they can also be vulnerable to power failure). But because no key is needed to operate magnetic locks, mag-locks can't be picked - and you'll never be locked out because you've lost the key.

The core of a magnetic lock control system is an electromagnet made of advanced metal alloys. When electric power activates it, the bolt slides in or out, up or down, along its U-shaped channel to lock or unlock the door. Some mag-locks also incorporate timing mechanisms that allow them to operate only at certain times - during business hours, for example. Others have "transaction memory," which can record every use or attempted use. This function can be especially valuable with locks that use number-pads rather than coded cards: if an unauthorized person tries to gain access using incorrect codes more than twice, for example, the lock can automatically set off an alarm.

Magnetic locks work only with DC current, usually 12 to 24 volts. Many systems utilize batteries to provide the power, but others are wired into the building's AC current, which is converted to DC by an internal transformer. Because the locking mechanism relies on the electromagnetic charge, mag-locks fail if the power fails, and the lock will open: they are fail-safe, meaning that they stop working if the power goes off. (Locks using AC power, like electric strikes, remain locked when the power goes out: they are fail-secure.) The best mag-lock designs use batteries, with converted AC current as a backup, or the reverse: they use the building's AC current (converted to DC) with batteries for backup.

Whatever their power source, while access from the outside requires electric power, most magnetic locks can be opened from the inside without electricity, making egress in an emergency safe and reliable. One typical exception is in high-security applications like prisons, where both ingress and egress are controlled.

Magnetic locks are designed to read a variety of different coding mechanisms such as smart cards, proximity readers, and keypads. That versatility makes them ideal for both institutional or business use and for home use. If an employee is dismissed, for example, his or her magnetic code can be immediately deactivated, so that that single smart card no longer works. If a lock uses a numbered keypad, the coding can be changed quickly and easily, with the new code given only to those authorized. For home use, each family member can be given a different access code, making it easy to track when a delinquent teenager finally got home! The code can also easily be changed or deactivated if needed - in the case, say, of an intransigent former boyfriend or girlfriend, or an unfriendly divorce.

Another benefit of electromagnetic locks is that they're silent. When you are "buzzed in" to an apartment building, that buzzer signals that AC power is being used - it's the sound of AC current passing through an electric strike. But if you hear only the soft click of the bolt being released, it's the silence of DC power, most likely using a magnetic lock. Generally, though, the AC strike lasts only as long as you hear the buzzer; after that, the door relocks. For home use, the silent magnetic lock is generally preferred.

Bear in mind that, as an electric appliance, magnetic locks must be properly installed to ensure that they're not susceptible to fire. Although Do-It-Yourself aficionados can install their own battery-operated mag-locks, it's always best to use a professional installer, who will also know the local safety codes that must be followed.

Now, for those who worry about these things, the power consumption of a magnetic lock - even one using AC power and a transformer - is so minimal as to be unnoticed on your Con Ed bill. And there's no reason to fear having a "residual electromagnetic aura" hanging around your front door: you won't!

Originally published: http://www.mr-locks.com/news.php?id=49

The Simplicity Of Catching Raindrops With A Rain Chain

A rain chain may seem as simple as it sounds. Well, it actually is! A rain chain is a simple outdoor decoration that catches rainwater and trickles down. These rain chains are widely used in Japan, and are making its way into American households as another added element to their outdoor décor.

“Kusari doi”, in Japanese, literally means “chain gutter”. It is an alternative to traditional downspouts found outside of houses. Rain chains have been used in Japan for hundreds of years. Its purpose is for aesthetics, as well as for practical reasons: catching rain water. It may be deemed as a decorative item, and rain chains are, with different styles and designs that are appealing and attractive. In essence, it transports rainwater downwards to a drain or a storage container, or even plants or nearby bushes. In addition, the rainwater collected is also used for the household for watering plants or for other household chores. Rain chains are also commonly found on temples.

Rain chains are typically either a series of cups, in different designs, mostly made out of copper and other various metals. They are linked together by chains, with a hold on the bottom of each cup. This allows rainwater to go drain through, traveling its way onto the vertical chains, and onto the next cup, until it eventually ends up in a barrel or over a bush or plant. The rainwater playfully dances and flows down the hand-crafted metal channels that make a pleasing tinkering sound.

They can be hung from the corners of the roof in order to direct the flow of water into large barrels. In its simplest form, rain chains do what downspouts do, except that rain chains are prettier, visually pleasing and delightful. They also create a sense of tranquility and peace. Over time, the copper chains develop a rich, bluish-green patina. Patina is a film that is usually a bluish-green color that is created by oxidation on the surface of the old bronze or copper metal and often esteemed as being of ornamental value.

Here are few examples of rain chains that are available on Garden Winds:

Bluebell Copper Rain Chain—handcrafted, available in smooth copper finish or antique blue verde; has 9 continuously flowing bluebell cups

Brass Lily Rain Chain—features a series of five, sculpted lilies; made of brass, and can be hung from the gutter

Buttercup Rain Chain—handcrafted, has 6 linked buttercups

Copper Link Rain Chain—available in single or double links

Umbrella Copper Three Cup Rain Chain—beautifully detailed umbrella design

Fish Copper Three Cup Rain Chain—for fish lovers, the fish have open mouths to catch water in, as if caught by a fishing line

Crocus Cup Rain Chain—cups are handcrafted like the crocus flower, with 6 copper cups connected by a copper finished linked chain

Pineapple Rain Chain—five, cute sculpted pineapple cups adorn this rain chain to catch raindrops

If you enjoy the sights and sounds of raindrops falling, then you definitely need a rain chain to enhance your outdoor gazing! They never rust and will add a pleasant sight and sound to your outdoor landscape. Garden Winds has one that is right for you. Choose from the many different styles to complement your outdoor décor. Enjoy tradition and simplicity with a rain chain.

About the Author

Charmaine Ferrer is an associate writer for Garden Winds and The Lucky Clover Trading Co. For questions or comments, she can be reached toll free 877.479.4637.

Is it okay to use an outdoor chain link dog kennel (for Siberian Husky breed)?

I don't want to fence in my backyard, so I was wondering about using a kennel for his outside-time. (He would live inside the house the majority of the day & all night.) I live in the country and wouldn't want the dog to run away, harm other animals or children, or anything to harm him. Thanks for your help!

Huskies are independent thinkers and need to be able to move and run throughout the day. I think you will find your dog will be unhappy and frustrated and might resort to some negative behavior if he is kenneled up outside especially if he sees little things to chase and can't get to them. You might have to deal with some howling and barking. Huskies are also pack oriented so consider getting another husky to keep him company. I would also suggest installing a dog run rather than a square cage to give him room to at least run back and forth. Compare the cost and then see if a whole fenced yard wouldn't be a better option for your dog. If you don't already have a Husky, consider a different breed that doesn't require as much exercise and can be offleash without wandering away.

Holy Horology
Everything began by a ‘mass’ or ‘service’ on Tuesday April 10, the day before the opening of BaselWorld. At the end of the day, a small el-egant crowd gathered at the Elizabethan Kirche in Basel, squeezing together on the church benches under the high and colourful stained glass windows.

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