Rear parking sensor with buzzer Technical Specification: 1) Wireless Car Entry Level Rear 4 Parking Sensor System 2) Sensor detection range: 0cm 2.5m 3) Display range: 30cm 2.5m 4) 22mm plastic flat 5) 4/3/2 sensor optional 6) Bi Bi Bi Alarm voice:>80dB. 7)Ultrasonic Frequency:40KHz 8) 3 color LED 4 channel w/ digital readout,Built-in buzzer 9) Rated Current:20-200mA 10) Power Input: 9 16V DC 11)Working temperature:-30 +70°C 12) Display working temperature:-20 +60°C ACCESSORY: Power Supply Cable 1PCS(clue 0.8M) Sensor Cables 4PCS(clue 2.5M) Display Cable 1PCS(clue 5M) Buzzer Cable 1PCS 3M Self-Adhesive Tape or Velcro 1PCS High Quality Driller 1PCS(22mm) lnstallation Manual 1PCS Sensor Spacers 4PCS