Brand N/A Quantity 1 piece(s) Function The provoke design for voice and digital make it more harmonious and attractive; The numanity design and human voice notification for distance of obstacles; The sever colors display for orientation of obsacles; The vocal notification and digital distance display show the characteristics especially at night; Anti-electromagnetic interference; Probe embedded installation CPU N/A Detecting Distance Car behide 0.3~2m Sensor Color Black Sensor Qty. 2 Sensor Diameter 2.4 cm Monitor Type LED Monitor Size 0.7" digital LED display Working Voltage DC 12V Rated Current 20~200 mA Ultrasonic Frequency 40 KHz Alarm Volume 70 dB Working Temperature 20~80'C Other Features Prevent from corner colliding and impacting with special design for easy operating Packing List 1 x LED monitor (490cm) 1 x Microcomputer host 1 x Tapper 2 x Radar probes (245cm) 2 x Adhesive tapes 1 x English manual