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Easy Install Motion Sensor Light Switches

On April 2, 2011, in Home and Garden, Technology, by GuestPoster

Switches that respond when they sense movement are called motion sensor light switches. Motion sensors used to be popular in alarm systems only. However, this technology has been recently fitted to light switches, adding more pizzazz to how we turn our lights on or off.

Motion sensor light switches out in the market today come in three different variants:

  1. Pyroelectric Infrafred Sensors (PIR): they work by identifying body heat and activate whenever this heat is detected.
  2. Ultrasonic Sensors: these sensors emit pulses and analyze the how these pulses reflect from objects.
  3. Microwave Sensors: these sensors emit microwave pulses and analyze how these pulses bounce off from objects.

Most motion sensor light switches contain a combination of two of the technologies mentioned about in order for them to work very efficiently.

Motion sensor switches in every single room in the house does not only make things convenient for the household, they also save a lot of energy. These switches turn lights off whenever nobody is in the room and this makes them a priority for anybody looking to contribute to the cause of a greener planet!

These switches may look expensive but they actually come cheap. For $25 only, you can get screw-in motion sensor switches made for 25-100 watts bulbs. Installation is so easy and you need not hire anybody to install them for you.

For installation, first remove your bulb. Screw in your motion sensor switches in place and replace your bulb. That’s all it takes. To try them out, try leaving the room and your lights should automatically go off after a few minutes. Remember that these switches work best in enclosed spaces such as your bedroom or basement so they may not work outside of your house.

These motion sensors measure 4” in length and 3” in diameter and can cover a full 360° radius. To activate them, simply walk in or out the room; that’s how easy they make things for you!

Perhaps the only limitation these screw-in motion sensor switches have is that they are only compatible bare light sockets designed for light bulbs mounted on the ceiling. They do not work with CFLs or compact fluorescent bulbs.

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The Best Laptops of 2011 for Under $500

On March 24, 2011, in Technology, by GuestPoster

What should you do if you just cannot get any of those free laptops? Save up for one of course. Laptops are not as expensive as they were five years ago. Manufacturers have realized just how important laptops are in today’s society and there is also stiff competition in the market for desktops and laptops. This has lead to the prices of laptops becoming significantly lower than ever before. Today, it is no longer difficult to find laptops under $500 which are equipped with the latest specifications. Here are some of the best choices if you want a new laptop and you have $500.

Lenovo G590 Series 067999U. This laptop has an elegant black color and it comes with the Intel Dual Core P6100 with a speed of 2GHz. This comes with 4GB of DDR3 memory and a hard disk with a space of 320GB. This is also a full sized laptop with a screen measuring 15.6” and the battery lasts for up to 3.8 hours. This is a basic laptop with an excellent price to boot. The money you pay for this laptop is very much worth it.

Acer AS5742-7120 15.6-inch laptop. This comes with the Intel i3 processor with a speed of 2.4 GHz. This comes with 4GB of DDR3 RAM and a hard disk space of 320GB. This is equipped with the Intel HD graphics and the screen size is 15.4 inches. This is also preloaded with the Windows 7 operating system. This also has an HDMI connection which allows you to connect your laptop to your TV.

HP G62-340us. This is a laptop with a screen size of 15.6 inches and this comes with 3GB of DDR3 RAM. The hard disk space is 320 GB and the battery lasts for 4 hours. This also has the ATI Radeon HD 4250 graphics card so if you liek games, this is for you.

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Bathroom Lighting Technology

On January 13, 2011, in Home and Garden, Technology, by GuestPoster

Like other technologies, lighting has come a long way since the first bulb, and even today there are advancements all the time. From plain old bulbs to fluorescents, halogens, and LEDs, the effort to balance the various challenges you might face–brightness, heat, power, moisture resistance, and so on–continues every day. To look at a few of the recent changes, this article will cover a few aspects of plain old light fixtures and a relatively new technology, LED lighting.

TECHNOLOGY

A standard light fixture used for bathroom mirror lighting, whether it uses a filament or some kind of gas, uses a relatively high amount of energy, from tiny 7-watt bulbs (typically used in sets) to 100+ watts. On the other hand, LED grow lights, for example, use 7 watts to produce the same brightness that a normal 60 watt bulb has. Also, an LED could last as long as 100,000 hours.

This is more than eleven years of continuous use. On the other hand, the 60 watt bulb from the example may only last 750 hours.

PITFALLS

So why haven’t LEDs simply replaced standard bulbs in conventional lighting?  A 100-watt LED could be around $400, likely much more than the fixture itself. However, given that the LED will last more than 133 times as long, it could still be worthwhile if you have the money. Buying one $400 bulb as opposed to 133 $3 bulbs is much more convenient, and saves electricity as well. Prices are also expected to decline in the next few years. While LEDs have only limited applications right now (such as plant growth), they could move into other areas in the same period.

CONCLUSION

A new LED bulb may even outlast the new light fixture itself if it is in the bathroom, given that moisture can eat away at any exposed metal. While it may be difficult to find LEDs for the bathroom now (and expensive as well), in the long run, it could save you money.

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