Report ACT Z420 Broadband Alarm Filter. The ACT Z420 Broadband DSL Alarm Filter is a quick-fit solution to the problem of analogue alarm communication being lost caused by customers upgrading to broadband DSL lines. The filter can be installed either directly to the telephone line using the RJ-11 lead or more securely within the control panel by cutting the lead in half and using the chock-block connections provided. Once connected, the filter will allow analogue communication to operate normally on Broadband DSL lines. TECHNICAL APPLICATIONS: * Enables alarm signals to operate on Broadband DSL lines. * Blocks interference between voice and DSL. * Supplied with choice of RJ11 or Chock-Block connections. The microfilter is available direct from ACT Meters Ltd. Telephone 01744 886660 Fax 01744 886661 Email dave@actmeters.u-net.com ACT's website: www.actmeters.co.uk