IUS-101 ultrasonic sensor is used to detect whether the vehicles is being or not with the set distance by the way of ultrasonic reflection. The work principle is according to the ultrasonic which was send from up to down by the ultrasonic detector, detect exactly whether every park lot is occupied or not and the information will be sent at last. Features Industrial design Automatic adjust detect distance range, save install time Black and white shell for you choose Advanced ultrasonic detect mode The advanced detection is used. The wrong information is caused by the outside disturbance or the environment changing is hard to be happened like the other detection way of infrared way or microwave With Highly Anti-disturbance capability to avoid wrong judgment. Easy to install and maintain. The adjustable height range is 1.0m to 3.5m. The height brightness diode indicator light indication detective status; 1S or 5S of sign output delay can be choosing through the outer switch. Technical data Operating Voltage: 24VAC/DC Operating temp.: -20 to 6 Storage temp.:-40 to +8 Operating relative humidity: 30%-90% Used condition: installed on the parking lot it usually installed with the probe down in ceiling in a way of suction top. Height range 1.0-3.5m (adjustable)