Treedix Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Compatible with Arduino UNO R3/51/STM32 - TRX5-0055

• UPC   764784794042
• The module has stable performance and accurate distance measurement. The high precision of the module, the ultra-close blind zone (2cm), and the stable ranging is a strong basis for this product to successfully enter the market. The working principle of the module: using IO trigger to measure the distance, give a high level signal of at least 10us. the module automatically sends 8 40khz square waves to automatically detect whether there is a signal return. if there is a signal return, a high level is output through IO, The duration of the high level is the time from emission to return of the ultrasonic wave. Test distance = ((Duration of high level)*(Sonic :340m/s))/2 HC-SR04 ultrasonic distance sensor is very suitable for all projects that need distance measurement, such as avoiding obstacles.