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ADSL Modem & Telephone Filter White
High speed internet modem and telephone device filter. Filters must be fitted before high speed internet is connected or activated on your phone line. This filter separates the internet data from the telephone signal in high speed internet installations.
Use one filter for each telephone device, including your phones, fax, dial-up modem, Sky decoder etc.
Maximum of 5 filters per installation.
ADSL line filters may not be suitable with some monitored burglar alarms or medical alarms.