EPLZON HC SR04 Ultrasonic Module Distance Sensor fit for Arduino Robot XBee ZigBee (Pack of 5 pcs)

EPLZON HC-SR04 Ultrasonic ranging transducer sensor Test mode: Use IO to trigger high-level signals. (Not less than 10us), the module automatically sends 8 40kHz and detects whether there is a pulse signal return Detection area: 0.78~196 in/(2cm~500cm); high precision: up to 0.12 inch/(0.3 cm), effective angle: less than 15°; Trigger input pulse width: 10uS Power supply: 5V DC; Quiescent current: less than 2mA;Dimension: 1.77 x 0.78 x 0.59 inches/45mm x 20mm x 15mm(length*width*height) Test distance=((high level duration)*(sound wave: 340m/s))/2