WSK-HEAT and WSK-HEAT-ROR addressable, wireless heat detectors use a state-of-the-art thermistor sensing circuit for a fast response. The WSK-HEAT provides fixed temperature alarm detection at 135°F. The WSK-HEAT-ROR provide Rate-of-Rise Detection at 15⁰F/min. The WSK-HEAT and WSK-HEAT-ROR communicate with the fire alarm control panel (FACP) through a wireless mesh network to the WSK-WGI wireless gateway. Note: Must be used with Silent Knight 6000 Series addressable fire alarm control panels.