Notice: this link does not contain sensors and Hole Saw Specification: 1. Rate Voltage: 12V 2. Operating Voltage Range: 9-16V 3. Rate Current: 20-200mA 4. Detecting distance: 0.2 - 2.5m 5. Ultrasonic Frequency: 40KHz 6. Working Temperature: -30-80degC 7. Display Working Temperature: -20-60degC Features: Double CPU and advanced chipset for enhanced coverage and detection (0.2-2.5m). With digital colored LED display (number and light). Help to prevent dangerous and costly collisions. Help to provide increased safety for passengers, pedestrians and family members who happen to be around the moving vehicle. Detect small children and low walls as well. Anti-freeze and rain proof. Easy to install. A saw drill head included. Package Content: 1 x Main Control Box 1 x LED Display 1 x Power Cable 2 x Double Sided Adhesive Pad 1 x User manual Notice: this link does not contain sensors and Hole Saw