5pcs HC-SR04 Ultrasonic Module Distance Sensor

Detection distance. 0.78~196 inch/(2cm~500cm); High accuracy: up to 0.12 inch/(0.3cm); Effective angle: less than 15°. Power supply: 5V DC; quiescent current: less than 2mA. Test distance = ((high level duration)*(sound wave: 340m/s))/2 HC-SR04 consists of an ultrasonic transmitter, receiver and control circuit. When triggered, it emits a series of 40KHz ultrasonic pulses and receives echoes from the object. Packing List 5 x HC-SR04 Ultrasonic Module 10pin Male to Female Dupont Wires 10pin Female to Female Dupont Wires