... . Full-weather design, un-affected by wind, ice, snow Buzzer Car Parking SensorModel: PST-PSB3920Specifications: Measuring the distance by radarAlarm by ... design, un-affected by wind, ice, snow & rainAll kinds of sensor colors and styles are availableHigh quality and easy to install ... ~ 1.5mUltrasonic Frequency: 40KHzDisplay Working Temperature: -30 ~ +70°C Buzzer Car Parking Sensor