Specification :

Intelligent digital display of distance against obstacle Standard 3-wave and 7-band light stripe display 4-level beeping alarm to indicate safety zone, caution zone and danger zone All-round detection with 2/4/6 ultrasonic sensorsEnglish Voice report optionalEasy stick-on installation on dashboard (roof mount design optional). Technical parameters: Nominal Operation voltage: 12V DC Operation current: 20mAh ~ 200mAh Sensor installation height: 45 ~ 60cm Detection distance: 0.4 ~ 2.0m Ultrasonic frequency: 40kHzOperating temperature: -40°C ~ +85°C Beep volume: 80 ~ 100dB (at 30cm distance)