* Output signal: Electric frequency signal, high level 5V, low level 0V.
* Sensor angle: Not more than 15 degrees.
* Detection distance: 2cm-450cm.
* High precision: Up to 0.3cm
* Input trigger signal: 10us TTL impulse
* Echo signal : output TTL PWL signal
* Mode of connection:
1.VCC 2.trig(T) 3.echo(R) 4.GND
* Use method: Supply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is used as a switching output when anti-theft module, and without the feet when ranging modules.