Laser sensor with M8*1mm metal detection head, 1mm spot size, diffuse reflection/through beam detection mode and NPN/PNP NO/NC output mode for selection.

Specification:

Note: The detection range of diffuse reflection laser sensor can be adjusted by the knob (Clockwise rotation for adding distance, anticlockwise rotation for reducing distance). The detection range of through beam laser sensor can be adjusted by the distance of projector and receiver.
Dimension (diffuse reflection type, unit: mm):

Wiring diagram:

Tips: Laser sensors vs. ultrasonic sensors
Ultrasonic sensors are also often used to detect objects at greater distances, and since it is not an optical device, it is not affected by color changes. However, ultrasonic sensors measure distance based on the speed of sound, so they have some inherent disadvantages and cannot be used in the following situations.

1. When the target to be measured is not perpendicular to the transducer of the sensor. The target of ultrasonic detection must be within an angle of no more than 10° from the vertical azimuth of the sensor.
2. When the beam diameter is small. The general ultrasonic beam is 0.76cm in diameter when it is 2m away from the sensor.
3. When a visible spot is required for position calibration.
4. Windy occasions.
5. Vacuum occasions.
6. When the temperature gradient is large. In this case the speed of sound will change.
7. Occasions that require quick response.

While the laser sensor can solve the detection of all the above occasions, which cannot be done by ultrasonic sensors.