Buying US system to use in the UK - will this work

I have built the system in the US and I have a friend that will ship to me but will it work in the UK ??

Glad you asked @UKDanny! Our Alarm products should only be purchased for the region it is specified for. As environments, compliance, and regulations can vary greatly in different countries, we’ve designed the Alarm devices to comply specifically to the country of purchase. For this reason, we do not advise using a US Alarm in Europe, or a UK Alarm in the US, etc.

Ok thank you - looks like I will have to look for a different alarm as the one in the UK at the moment is rubbish compared to the US alarm.

Thank you for your answer.