Set of 5 Ultrasonic Module HC-SR04 Distance Sensor for Arduino UNO MEGA R3 Mega2560 Duemilanove Nano Robot Rapsberry Pi 3, 2 & RPi Model B+ XBee ZigBee

Description

Ultrasonic HC-SR04 Distance Measuring Transducer Sensor HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it sends out a series of 40KHz ultrasonic pulses and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse. power supply :5V DC quiescent current : effectual angle: ranging distance : 2cm - 500 cm resolution : 0.3 cm