The SMVS system has two heat detection zones and utilizes two thermocouple style heat
detectors rated for a 350F max temperature set point. They are installed over the engine
and monitor the compartment for high heat due to a fire condition. The sensor works by the
internal contacts closing due to a high heat event, shorting together, and putting the panel
into alarm and activating the release circuit. Each sensor lead cable is eight feet long and
plugs into the SMVS Control Panel.