Learn Mode Rate-of-Rise Heat Sensor
The Learn Mode Rate-of-Rise Heat Sensor combines a Chemtron Model 601 detector and an ITI learn mode wireless transmitter in one unit. A built-in thermostat trips the transmitter when the temperature at the sensor's location reaches about 135°F.
Since many fires grow rapidly in intensity causing a rapid temperature increase, the thermostat also trips the transmitter if the temperature rises 15°F or more, per minute.
The sensor is powered by a 9-volt battery (see note), either alkaline or lithium type. The alkaline battery can last 12 to 18 months. The lithium battery can last twice as long as the alkaline type.
When the battery voltage gets low, the sensor sends a low battery signal to the panel. The panel then activates sirens that emit trouble beeps to notify the customer that the sensor's battery must be replaced.
