home alarm systems

Wireless Portable Video Security System LCD – Outdoor Camera

SVAT GX5203 Wireless Portable Video Security System – 2.5-Inch LCD & Outdoor Night Vision Surveillance Camera
The GX5203 is an outdoor wireless color camera that can be hidden for undercover indoor use. It comes with everything you need to start monitoring. The small but powerful bullet hole camera is wireless and features automatic night vision (CDS sensor). Once it becomes dark the infrared LEDs will activate and give you a clear view of everything, even in the dark! Plus, this camera has a built-in microphone so you will not miss anything. This camera has been machined out of high grade aluminum and is packed full of quality components. The camera sends audio and video wirelessly to the handheld display, which has a 2.5 “LCD screen for crystal clear viewing of the camera’s display. Or you can connect to your TV, VCR, DVR or computer for viewing and recording purposes. This system comes with a camera, but you can add 2 more SVAT compatible cameras, and automatic feature allows you to cycle between cameras at intervals that you select.

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Personal Alarm using IC 74HC04

This circuit uses digital CMOS IC 74HC04 used power supply 3V only. The IC perform produce the frequency about 2.8kHz and 3.3kHz work can alternate into pieces warn to follow want.
These handheld piezo screamers are also known as rape alarms. They are a very loud siren. This one is particularly loud even though it runs on only two AA batteries. It uses a push-pull transformer output.
The detail is other , see in circuit picture.

Source:http://www.members.shaw.ca/novotill/PersonalAlarms/index.htm

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Wireless Home Security System Calls Your Cell Phone

Why spend hundreds of dollars on a security system and pay monitoring fees when you can get the MACE WIRELESS HOME SECURITY SYSTEM for a fraction of the cost? This easy to operate security system will sound an alarm and dial up 5 preset phone numbers to let you know motion has been detected or a door or window has opened in your home. A land line with “tone” dialing is required.
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