What that lease paragraph says is that if an alarm is provided, the land lord has no liability.The following text is part of each lease: "Security. Tenant understands that Landlord does does not provide a security alarm systems or other security for Tenant or the Premises. In the event any alarm system is provided, Tenant understands that such alarm system is not warranted to be complete in all respects or to be sufficient to protect Tenant or the Premises. Tenant releases Landlord from any loss, damage, claim or injury resulting from the failure of any alarm system, security or from the lack of any alarm system or security." The "does" box is checked.
I would get rid of the alarm system and install a surveillance camera that records who comes and goes through the door. It's a lot cheaper than $2,000 per year.

