TPL1000B-Bparking sensor system is made up of micro-computer, DSL,buzzer,four quantity of ultrasonic sensor. It can prompt you by the most available and direct alert system----buzzer which sounds production gradually.However it’s no need to watch the data and the buzzer is small. In that case the buzzer can be installed anywhere in your car. Place of Origin: JIANGXIChina Brand Name: TONPHINor your own logo Model Number: TPL1000B-B Samples for testing: Available and welcome Certificate: CE,RoHS,FCC Highlight: Hottest Selling,Popular Our Advantage: 10 Years Car Reverse detector(ultrasonic sensors) Factory-Expertise Type: Imitates the tyres Parking Sensor Others: parking sensor TechnicalParameters: Voltage:9 15V Temperature:-40 +80°C Input:<4W Beepvolume:70 90dB Range(Rear):0.3 2.0m Distance and clew relation table Space to the objectionVoice of the alarmVoice Play(Only TPL1000B-V)200cm 170cmBi-------- Bi-------- Bi-------- Bi--------Voice Play "2m" at 200cm160cm 140cmBi------- Bi------- Bi------- Bi-------Voice Play "1.5m" at 150cm130cm 110cmBi------Bi------ Bi----- Bi------Voice Play "1.2m" at 120cm100cm 90cmBi----- Bi----- Bi----- Bi-----Voice Play "1m" at 100cm80cm 70cmBi---- Bi---- Bi---- Bi----Voice Play "0.8m" at 80cm60cm 50cmBi--- Bi--- Bi--- Bi---Voice Play "0.5m" at 50cm40cm 30cmBi-- Bi-- Bi-- Bi--inside 30cmBi--------------Voice Play "stop" inside 30cm