It is accurate to within 0.03mm. The same sensor is used on a boat to shine a beam off the tiller bar, using the reflection to measure the Angle of the rudder.

Machine used high sensitivity optical fiber sensor. Automatic sewing without manual step On/Off.

Using the on off sensor that fixed on the load side line of electric equipment to control electric magnetic valve, then carry on remote control and realize automatic sprinkling of spray device.