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

Features:· 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. Specification: 1: Use voltage: DC5V 2: Quiescent current: less than 2mA 3: Level output: high 5V 4: Level output: bottom 0V 5: Sensing angle: <15° 6: Detection distance: 2cm