2 PCS Landa Tianrui LDTR - WG0106 HC - SR04 Sensor Module Ultrasonic Distance Measurement Board for Arduino

1. Detection distance: 2cm - 450cm, super close blind spots ( 2cm )
2. Provides a full set of ranging process
3. Measuring precision up to 3mm
4. Adopt IO trigger through supplying at least 10us sequence of high level signal
5. The module automatically send eight 40KHz square wave and automatically detect whether receive the returning pulse signal
6. If signals returning, through outputting high level and the time of high level continuing is the time that from the ultrasonic transmitting to receive
7. Static current: less than 2mA
8. Working voltage : DC 5V
9. Output signal: electric frequency signal, high level 5V, low level 0V
10. Sensor angle: not more than 15 degrees
11. Mode of connection: VCC / trig ( T ) / echo ( R ) / GND