What is the Image Sensor's frame rate?

After Image Sensors register a motion activation, the Image Sensor takes the first frame almost instantaneously. The second frame is taken one second later.    

Note: Certain requirements need to be met before the motion sensor is tripped (e.g., a certain amount of motion in certain zones) in order to prevent false alarms, and the motion trip itself is not instant when someone comes in. This is standard and per the UL certification for the Image Sensor.