Directed Electronics Python 1601 Owner's Manual page 42

Power Window Control:
Automatic power window control is provided
with the 529T and 530T systems. These can operate power windows,
and can roll them up automatically when the system is armed, roll them
down, or both up and down.
Ultrasonic Cabin Sensor:
Using the 509U Ultrasonic cabin sensor pro-
vides a field of protection inside the car to protect your belongings.