Ultrasonic

HC-SR04 Ultrasonic Distance Rangefinder/Obstacle Sensing Angle : 30° with Frequency : 40KHz The module performance is stable, measure the distance accurately:Can and SRF05, SRF02 ultrasonic distance measuring module and other comparable. Module precision, blind spots (2cm) super close, stable ranging success of this product to market under the strong! Feature:Voltage: […]