The Detector tool allows you to place the following types of alarm detector on the scene:
Smoke detector - is designed to detect a fire when the smoke concentration in the environment increases, and to alert people about the fire occurrence.
Heat detector - designed to detect a fire when the air temperature increase, and to alert people about the fire occurrence.
Gas detector - designed to detect a fire when the carbon monoxide concentration in the environment changes, and to alert people about the fire occurrence.
Sprinkler - designed to detect a fire when the temperature at the initial stages of fire increases, and to alert people about the fire occurrence.
To place a detector, click the 
button, select the desired type of the detector and press the LMB at the desired location on the scene.
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The Detector tool has the following parameters:
- Level - the wall mounting height of the detector from the floor level (meters). The default value is 3 meters.
- Threshold value of optical density - the optical density value at which the detector is triggered (dB/m, Np/m, %/m).
- Threshold value of temperature - the trigger temperature value of the detector (°C).
- Threshold value of volumetric concentration - the volumetric concentration value of carbon monoxide in the atmosphere required to trigger the detector (ppm).
- Thermal inertia coefficient - the thermal inertia value for the detector activation (m * s)1/2.
- Delay time after threshold exceedance - the delay time for the fire detector to activate (seconds).
- Control zone radius - the control zone radius of the detector (meters). Displayed as a red frame when placing the detector on the scene.
For each type of detector, use a separate set of the specified parameters.
You can set the detector’s parameters before, during and after placing the detector on the scene.
The activation of the detector affects the start time of evacuation. For more details, see Evacuation Start Time.