1. Current: 200 mA
2. Input power: DC 12V
3. Operating temperature: -30~ +70 degrees Celsius
4. Alarm triggered by four beeps
5. Ultrasonic frequency: 40 KHz
6. Sensor detection range: 0~2.0 meters
7. Sensor diameter: 22 mm
8. Package contents: buzzer x 1; radar host x 1; drill bit x 1; power cord x 1; english instruction manual x 1; sensor probes x 4