Specifications: LED display Current:200m A Input Power: 12V DC Working temperature: -30 ~ + 70C Voice Alarm: 80d B Ultrasonic frequency: 40 KHz Sensor detection range: 0~ 2.0 m Diameter of sensor:22mm Package included:1x LED display 1x Main Control Box 4x Parking Sensors with 2.5m Line 8x Double Sided Adhesive Pad 1x Power Cable 1x Hole Saw 1x User manual