JSN-SR04 Ultrasonic Ranging Sensor Module Reversing Radar Waterproof Ultrasonic Ranging Kit

Description 1 Button description from the first one on the left button button set button 2 Single chip model STC89C52 5 AT89S52 optional default issued STC89C52 3 The alarm distance can be set After pressing the setting button you can press the plus or minus button to modify the alarm distance and have the power down save function 4 When the measured distance is less than the set distance the buzzer will alarm 5 Module measurement range 5cm 4m 6 This design can be used as a reversing radar for automobiles 7 The characteristics of this design wide measurement range stable very convenient to operate can be used after power on 8 Input voltage DC 4 5 5 5VPackage included 1 x JSN SR04 Ultrasonic Ranging Module Kit