[Ticket Question] What equipment for an alarm in a barn?

[securitywarehouse]

hi i have a job for an alarm system in a barn with no heating and damp/sub zero temps. the barn has two doors one sliding and one side entrance/fire ext. it has mains electric for power supply. also want a gsm dialer for the system. i cannot find a system that will be ok with the damp conditions. please advise, kind regards