Eve's Blog
ADT vs Vivint Security System Review

Please look on the label at the back of any of your existing. This device will NOT work on UK Visonic panels that work on the 868-1 frequency. Visonic wireless external siren sounder (868-0) id410-5717 (only eu / adt) comes in the original boxed. (Will not work for Visonic systems that use 868-1 frequency).