Roanoke Times
Copyright (c) 1995, Landmark Communications, Inc.
DATE: TUESDAY, April 11, 1995 TAG: 9504110096
SECTION: EXTRA PAGE: 3 EDITION: METRO
SOURCE: DAVID BUTLER
DATELINE: LENGTH: Medium
A: Wireless security systems are indeed easy to install and set up - no special tools or skills are required. In most cases, all you need is a screwdriver and a few hours. Many companies even offer toll-free help. Wireless systems can easily expand as your needs change. And if you should ever move, simply pack up your system and take it with you!
Until recently, security professionals scorned wireless products. Early systems were not always as reliable as their hardwired counterparts. However, today's wireless systems give up nothing to hardwired. In fact, the most prominent manufacturers in the security industry now offer a wide variety of professionally installed wireless systems for new and existing homes.
Surface-mount technology and ever smaller batteries mean less obtrusive sensors. In most cases, window sensors can be hidden by drapes and curtains. Low-power electronics and very short transmit times mean longer intervals between battery changes. Lithium batteries, included with some systems, last five years or more!
The most important feature to look for is fully supervised sensors. Full supervision has two defining characteristics: First, the panel always knows the state of each sensor. Otherwise, you could unknowingly arm the house while a window is open. Second, sensors report to the panel at regular intervals. This way the panel is able to alert you if a battery needs to be replaced or a sensor has malfunctioned. Full supervision ensures that your home's protection will not be compromised.
Before selecting a system, you'll need to do a little planning. How many windows and exterior doors are accessible? Could a carefully placed motion sensor or glass break detector be used in place of any window or door sensors? Would a second system wall station be worthwhile? The answers to these questions will help you choose a system with the right components.
The latest wireless systems feature easy-to-use wall stations with text displays, not unlike those that accompany top-flight hardwired systems. This enables you to name each zone (e.g., Shawn's Bedroom). Some systems can be operated from a telephone, eliminating the need for extra wall stations. Those with voice response are easiest to use.
A growing number of wireless security systems include enhanced features such as lighting control, intercom and temperature control. One company recently announced plans to integrate one of its wireless panels with a new screen-telephone. The telephone's oversized display provides graphical menus for accessing security and other home systems.
Most wireless security systems are now capable of being professionally monitored. However, be wary of dealers who "give away" the equipment in exchange for a long-term monitoring contract. This type of package is rarely a good deal. Finally, several do-it-yourself systems are available with professional monitoring options, including two-way voice communications with the attendant.
To receive a list of companies that manufacture supervised wireless security systems, please send $1.50 and a self-addressed envelope to David Butler F-505, Department TWN, 14713 Pleasant Hill Road, Charlotte, N.C. 28278-7927. The list includes toll-free phone numbers and a summary of each company's products. You'll also receive information on central-station monitoring options for do-it-yourselfers.
Q: You once recommended using a battery-powered thermostat with a furnace that has electronic ignition. My heating contractor said your advice was incorrect.
A: Some furnaces with electronic ignition can reset or damage an electronic thermostat. Since the stat draws power from the furnace, its sensitive electronics are exposed to voltage spikes generated by the ignition system. A battery-powered thermostat (different from battery backup) is immune to this problem. Some furnaces have built-in isolation. Perhaps this is what your contractor was trying to tell you.
by CNB