The IQ Heat 135/200 wireless heat detector uses electronic processing to detect heat conditions plus a wireless transmitter (319.5 MHz) in one unit. The micro-processor trips the transmitter when the temperature at the detector location reaches a fixed temperature of 135°F (57°C) or 200°F (93°C), depending on selection, or senses a rate of rise at 12°F to 15ºF (6.7 to 8.3ºC) per minute.
 
Rate of Rise rating, 12° to 15°F (6.7° to 8.3°C) per minute
UL Max Ambient Ceiling Temp, 100°F/150°F (37.8°C/65.6°C)
Storage Temperature, -30 to 167°F (-34 to 75°C)
Relative Humidity, 0 to 95% noncondensing
Frequency: 319.5 MHz (crystal-controlled)
Enclosure Dimensions: Diameter 2.29” (58.25mm), Height 1.28” (32.4mm)