HC-SR04  Good Ultrasonic sensor distance measuring module

Description:

HC-SR04 Ultrasonic Distance Module Sensor
This module performance is stable, measure the distance accurately. performance  nearly the same as SRF05, SRF02  SRF05, SRF02 ultrasonic distance measuring module and other comparable. Module High precision, blind spots (2cm) super close.

Main technical parameters:
    A: Voltage: DC 5V
    B: Static current: less than 2mA
    C: Electrical level output: 5V high
    D: Electrical level  output: at the end of 0V
    E: Induction angle: not more than 15 degrees
    F: Detection distance: 2cm-450cm
    G: High precision: 3mm