An alarm system includes two subsystems: a security subsystem that performs critical alarm condition monitoring and reporting; and an auxiliary subsystem that allows execution of other non-critical software components. The security subsystem may monitor the performance of the auxiliary subsystem, and maintain the performance by resetting and/or otherwise controlling the execution of software and use of hardware at the auxiliary subsystem, providing increased overall reliability of the security system, without compromising its ability to monitor security conditions at an associated premises.