Burglar alarms, CCTV systems and security lighting in Macclesfield, Manchester and the North West. Wm. Bradley & Co. Ltd. - Burglar Alarms in Macclesfield, Manchester and the North West.
Why choose a hard wired burglar alarm system?   Although at first glance the latest wireless systems seem to be the way forward for burglar alarm installations, they can be problematical. The following points describe the advantages and disadvantages of wireless and cabled intruder alarms. WIRELESS  SYSTEMS   For: •      Less time to install. No chance of future damage to cables. No need for concealed wiring expert engineers with a sound knowledge of buildings and construction techniques. Against: •      The lower labour charge is outweighed by the higher equipment costs. •      Wireless systems are susceptible to external malicious interference. •      We cannot offer extended warranties on wire free systems due to the possibility of unrepairable false alarms. Excluding events completely beyond our control, if installed correctly there is no excuse whatsoever for a false alarm on a hard wired system using screened cable. We will not tolerate false alarms on our systems. •      Wireless systems require more maintenance with the regular changing of numerous batteries in all detection devices including repeater units. This will be reflected in annual servicing costs. Many people choose to have a smoke detector as part of a hard wired intruder alarm simply to avoid changing its battery. Batteries are often faulty from new and can introduce a problem where there was none before. Their connections can become intermittent, as happens sometimes with TV remote controls for example. •      Often the outside sounder still has to be wired. This usually means running a cable through a roof space. In doing this, it takes very little extra effort and time to run wires for other alarm equipment. •      False alarms can be caused especially when the batteries are low. Radio frequency interference from sources such as CB radios with illegal boosters, or nearby lightning can cause false alarms. Whilst these problems can also affect hard wired systems they can be eliminated by the use of screened cables. •      The main advantage of wireless systems is the lack of unsightly cables, but with sufficient skill the wires can be completely hidden. The cables we use are low voltage, screened and very thin. They rarely need to be replaced and in most cases can be installed even without damage to decorations. Our work standard is: if you are not there during the installation, you should not be able to tell there has been anyone in your premises when you return. Security demands that all parts of a system be in constant communication with its CPU to prevent unauthorised removal of detectors. This communication path is always open to interference on a wireless installation. In summary we think wireless alarm technology still has some way to go before we could recommend installing these systems. William A. Bradley. CEO.
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