Dingdong Store DIY Electronics Kits Ultrasonic Module Distance Measuring Transducer Sensor 0~5.5m Soldering Project Kit for Car Reversing Alarm, A561
- The main controller of this module is STC89C51/52 micro controller.
- The digital tube displays the measured distance, and the triode drives the digital tube.
- HC-SR04 ultrasonic module measuring distance, measuring range 0.02m~5.5m.
- This module can be used as a car's reversing radar, and the alarm distance can be set and changed with keys..
- Please read the User Manual before installing. Our policy is to make our customers happy. If you are not 100% satisfied, just contact our customer service, we will refund your money. Since your product is shipped by Amazon, we are not sure what happened to our product at Amazon's warehouse. If any components are missing, please contact us for replacements..