Fixed Temperature Heat Detector, 57oC, 87oC, Model: DFE-135, DFE-190 The DSC 135/190 Fixed TemperatureHeat Detector suited for installation where high heat output fire is expected or in areas where ambient conditions would not allow use of other detection methods. Choice of fixed temperature/ rate of rise 135ºF or 190ºF Heat Detector. SPECIFICATION Response: Temperature 135ºF / 190ºF contact rating: N/O contact 100mA@60V Color: Ivory