Models WSK-HEAT and WSK-HEAT-ROR are intelligent sensors that utilize a state-of-the-art thermistor sensing circuit for fast response. These sensors are designed to provide open area protection with 50 foot spacing capability as approved by UL 521. Model WSK-HEAT is a fixed temperature sensor with 135°F fixed temperature alarm. Model WSK-HEAT-ROR is a rate-of-rise temperature sensor with 135° F fixed temperature alarm. Rotary dial switches are provided for setting the sensor’s address. (Figure 1). Two LEDs on the sensor are controlled by the panel to indicate sensor status.
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