Hello
We have a panic alarm in our house which is a programmable receiver plugged into the telephone system. My elderly Mum carries a small radio transmitter and if she needs help she can press a button which causes the panic alarm to phone for help. This all works fine, however...
The panic alarm causes some background interference on the telephone line which noticeably reduces the quality of our voice calls and broadband speed.
The problem is the panic alarm's external PSU which is a small regulated supply, and looks identical to a mobile phone charger, except the output is 12V 0.5 amps.
If I unplug the power supply and run the panic alarm off batteries there is no interference on the telephone line.
Therefore how can I reduce or eliminate the interference, is there perhaps something I can add to the power cable from the PSU to the alarm?
Thanks for your advice
We have a panic alarm in our house which is a programmable receiver plugged into the telephone system. My elderly Mum carries a small radio transmitter and if she needs help she can press a button which causes the panic alarm to phone for help. This all works fine, however...
The panic alarm causes some background interference on the telephone line which noticeably reduces the quality of our voice calls and broadband speed.
The problem is the panic alarm's external PSU which is a small regulated supply, and looks identical to a mobile phone charger, except the output is 12V 0.5 amps.
If I unplug the power supply and run the panic alarm off batteries there is no interference on the telephone line.
Therefore how can I reduce or eliminate the interference, is there perhaps something I can add to the power cable from the PSU to the alarm?
Thanks for your advice