Actume 4 Pcs HCSR04 Ultrasonic Module Distance Sensor with Mounting Bracket for Arduino

Description: The ultrasonic sensor HC-SR04 is a device that uses acoustic waves to measure the distance of an object. Measure the distance by emitting a sound wave of a specific frequency and listening to the rebound of the sound wave. By recording the time elapsed between the generated sound waves and the bounced sound waves, we can calculate the distance between the sonar sensor and the object. HC-SR04 is ideal for measuring the distance of all the elements of the category, for example avoiding obstacles. The module includes an ultrasound transmitter, a receiver and a control circuit.     The main technical parameters: Electrical parameters: Ultrasonic ranging chip: CS100 Working voltage: DC 3V-5.5V Working current: 5.3mA Working temperature: -40?-85? Output mode: GPIO Sensing angle: less than 15 degrees Detection distance: 2cm-600cm Detection accuracy: 0.1cm + 1%     Package included 4 * HC-SR04 ultrasonic module 4 * Acrylic mounting bracket