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| Focus House Hackmans Lane Purleigh Chelmsford Essex CM3 6RP |
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T: (+44) 01621 826800 |
| Company No: 2361436 VAT No: GB 529 4055 41 |
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Latest News |
| Alarm over monitored security systems For economic reasons a second line is seldom added to service monitored alarm systems. With the increasing take-up of high-speed internet a series of compatibility issues arise. In a traditional, correctly installed single analogue line installation, the alarm system should be able to 'seize the line' if the alarm is activated.However, with the rising use of DSL lines, customers are choosing to opt for high speed 'always on' internet access and this brings with it a series of compatibility issues."Most service providers include in the installation kit at least two microfilters and customers normally use these for their computer/telephone line," said Geoff Philpot, managing director of Focus EDL. "The problem is that the line going into the alarm panel is not filtered and will at best suffer interference and at worst will not work at all."The Z-A431EU effectively blocks interference between DSL and the monitored alarm panel. It isolates high frequency DSL and HPN (Home Phone Network) signals from low frequency voice and data communication.All new systems will soon be required to meet EN50131 and, to do this, the alarm panel must be capable of line seizure. In order to achieve this, the alarm must be installed first in line in the system. The Z-A431EU allows alarm panels to meet the standard. The filter is inserted between the telephone master socket and the alarm panel allowing seizure to continue, but also filtering the DSL signal from the alarm panel.Manufactured to a Focus specification by Excelsus, part of Pulse, the filter is suitable for use throughout Europe.It can be fitted in an alarm system at any time and can be added to an existing system when DSL activated. In addition, it can be installed in a new system that is, or will be, connected to an active DSL line. |
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