Editorial Reviews:
Synopsis
Technical Parameters: 1. Rated Voltage: 12V DC 2. Operating Range: 10.5V~ 16V DC 3. Rated Current: 50mA~ 180mA 4. Detecting Distance: 0.3~ 2.0m 5. Ultrasonic Frequency: 40KHz 6. Display Working Temperature: -30 ~ +70? Kid includes: Four sensor head One control Units Drill bit Beeper units 4 adjusting rings.