If your alarm uses an PSTN or ISDN auto / speech dialler, it will cease to be monitored after the switch off.
The aalarm2smart A2S-M1 is a simple solution to replace your redundant auto / speech dialer - ready for the ISDN and PSTN analogue land lines switch off in 2025.
You do NOT need to have an auto / speech dialler previously fitted to use this device.